./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe033_tso.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/safe033_tso.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 59af5db6 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe033_tso.i ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/safe033_tso.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-dev-59af5db-m [2024-02-02 09:14:52,906 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-02-02 09:14:52,981 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-02-02 09:14:52,986 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-02-02 09:14:52,986 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-02-02 09:14:53,018 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-02-02 09:14:53,019 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-02-02 09:14:53,019 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-02-02 09:14:53,020 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-02-02 09:14:53,020 INFO L153 SettingsManager]: * Use memory slicer=true [2024-02-02 09:14:53,020 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-02-02 09:14:53,021 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-02-02 09:14:53,021 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-02-02 09:14:53,022 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-02-02 09:14:53,022 INFO L153 SettingsManager]: * Use SBE=true [2024-02-02 09:14:53,022 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-02-02 09:14:53,023 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-02-02 09:14:53,023 INFO L153 SettingsManager]: * sizeof long=4 [2024-02-02 09:14:53,023 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-02-02 09:14:53,023 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-02-02 09:14:53,024 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-02-02 09:14:53,024 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-02-02 09:14:53,024 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-02-02 09:14:53,025 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-02-02 09:14:53,025 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-02-02 09:14:53,025 INFO L153 SettingsManager]: * sizeof long double=12 [2024-02-02 09:14:53,025 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-02-02 09:14:53,026 INFO L153 SettingsManager]: * Use constant arrays=true [2024-02-02 09:14:53,026 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-02-02 09:14:53,026 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-02-02 09:14:53,027 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-02-02 09:14:53,027 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-02-02 09:14:53,027 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-02 09:14:53,027 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-02-02 09:14:53,027 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-02-02 09:14:53,028 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-02-02 09:14:53,028 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-02-02 09:14:53,028 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-02-02 09:14:53,028 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-02-02 09:14:53,029 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-02-02 09:14:53,029 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-02-02 09:14:53,029 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-02-02 09:14:53,029 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-02-02 09:14:53,030 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-02-02 09:14:53,239 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-02-02 09:14:53,263 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-02-02 09:14:53,265 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-02-02 09:14:53,266 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-02-02 09:14:53,267 INFO L274 PluginConnector]: Witness Parser initialized [2024-02-02 09:14:53,268 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/safe033_tso.yml/witness.yml [2024-02-02 09:14:53,507 INFO L270 PluginConnector]: Initializing CDTParser... [2024-02-02 09:14:53,507 INFO L274 PluginConnector]: CDTParser initialized [2024-02-02 09:14:53,509 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe033_tso.i [2024-02-02 09:14:54,604 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-02-02 09:14:54,927 INFO L384 CDTParser]: Found 1 translation units. [2024-02-02 09:14:54,935 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe033_tso.i [2024-02-02 09:14:54,953 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/73249a1cc/7b6a61c4c25f457082eed31260c6fb8b/FLAG174b50360 [2024-02-02 09:14:54,971 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/73249a1cc/7b6a61c4c25f457082eed31260c6fb8b [2024-02-02 09:14:54,972 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-02-02 09:14:54,973 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-02-02 09:14:54,975 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-02-02 09:14:54,976 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-02-02 09:14:54,979 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-02-02 09:14:54,980 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 02.02 09:14:53" (1/2) ... [2024-02-02 09:14:54,981 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b5a9545 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 02.02 09:14:54, skipping insertion in model container [2024-02-02 09:14:54,981 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 02.02 09:14:53" (1/2) ... [2024-02-02 09:14:54,983 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@6591a34c and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 02.02 09:14:54, skipping insertion in model container [2024-02-02 09:14:54,983 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.02 09:14:54" (2/2) ... [2024-02-02 09:14:54,984 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b5a9545 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:14:54, skipping insertion in model container [2024-02-02 09:14:54,984 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.02 09:14:54" (2/2) ... [2024-02-02 09:14:54,985 INFO L86 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-02-02 09:14:55,140 INFO L99 nessWitnessExtractor]: Found the following entries in the witness: [2024-02-02 09:14:55,143 INFO L101 nessWitnessExtractor]: Location invariant before [L727-L727] (unsigned long )arg == 0UL [2024-02-02 09:14:55,143 INFO L101 nessWitnessExtractor]: Location invariant before [L747-L747] (unsigned long )arg == 0UL [2024-02-02 09:14:55,144 INFO L101 nessWitnessExtractor]: Location invariant before [L18-L18] ((((expression == 0) && (expression == 1)) && (0 <= expression)) && (expression <= 1)) && (expression == 0 || expression == 1) [2024-02-02 09:14:55,144 INFO L101 nessWitnessExtractor]: Location invariant before [L725-L725] (((((((((((((0 <= __unbuffered_cnt) && (0 <= __unbuffered_p0_EAX)) && (0 <= x)) && (0 <= y)) && (__unbuffered_p0_EAX <= 1)) && (x <= 1)) && (y <= 2)) && (y <= 127)) && ((unsigned long )arg == 0UL)) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && (x == 0 || x == 1)) && ((y == 0 || y == 1) || y == 2) [2024-02-02 09:14:55,144 INFO L101 nessWitnessExtractor]: Location invariant before [L723-L723] (((((((((((((0 <= __unbuffered_cnt) && (0 <= __unbuffered_p0_EAX)) && (0 <= x)) && (0 <= y)) && (__unbuffered_p0_EAX <= 1)) && (x <= 1)) && (y <= 2)) && (y <= 127)) && ((unsigned long )arg == 0UL)) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && (x == 0 || x == 1)) && ((y == 0 || y == 1) || y == 2) [2024-02-02 09:14:55,144 INFO L101 nessWitnessExtractor]: Location invariant before [L730-L730] (((((((((((((0 <= __unbuffered_cnt) && (0 <= __unbuffered_p0_EAX)) && (0 <= x)) && (0 <= y)) && (__unbuffered_p0_EAX <= 1)) && (x <= 1)) && (y <= 2)) && (y <= 127)) && ((unsigned long )arg == 0UL)) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && (x == 0 || x == 1)) && ((y == 0 || y == 1) || y == 2) [2024-02-02 09:14:55,144 INFO L101 nessWitnessExtractor]: Location invariant before [L769-L769] ((((((((((((0 <= __unbuffered_cnt) && (0 <= __unbuffered_p0_EAX)) && (0 <= x)) && (0 <= y)) && (__unbuffered_p0_EAX <= 1)) && (x <= 1)) && (y <= 2)) && (y <= 127)) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && (x == 0 || x == 1)) && ((y == 0 || y == 1) || y == 2) [2024-02-02 09:14:55,145 INFO L101 nessWitnessExtractor]: Location invariant before [L745-L745] (((((((((((((0 <= __unbuffered_cnt) && (0 <= __unbuffered_p0_EAX)) && (0 <= x)) && (0 <= y)) && (__unbuffered_p0_EAX <= 1)) && (x <= 1)) && (y <= 2)) && (y <= 127)) && ((unsigned long )arg == 0UL)) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && (x == 0 || x == 1)) && ((y == 0 || y == 1) || y == 2) [2024-02-02 09:14:55,145 INFO L101 nessWitnessExtractor]: Location invariant before [L722-L722] (unsigned long )arg == 0UL [2024-02-02 09:14:55,148 INFO L101 nessWitnessExtractor]: Location invariant before [L731-L731] (((((((((((((0 <= __unbuffered_p0_EAX) && (0 <= x)) && (0 <= y)) && (1 <= __unbuffered_cnt)) && (__unbuffered_p0_EAX <= 1)) && (x <= 1)) && (y <= 2)) && (y <= 127)) && ((unsigned long )arg == 0UL)) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && (x == 0 || x == 1)) && ((y == 0 || y == 1) || y == 2) [2024-02-02 09:14:55,149 INFO L101 nessWitnessExtractor]: Location invariant before [L729-L729] (unsigned long )arg == 0UL [2024-02-02 09:14:55,149 INFO L101 nessWitnessExtractor]: Location invariant before [L761-L761] (((((__unbuffered_cnt == 0) && (__unbuffered_p0_EAX == 0)) && (main$tmp_guard0 == (_Bool)0)) && (main$tmp_guard1 == (_Bool)0)) && (x == 0)) && (y == 0) [2024-02-02 09:14:55,149 INFO L101 nessWitnessExtractor]: Location invariant before [L741-L741] ((((((((((0 <= __unbuffered_cnt) && (0 <= __unbuffered_p0_EAX)) && (0 <= x)) && (__unbuffered_p0_EAX <= 1)) && (x <= 1)) && (y == 1)) && ((unsigned long )arg == 0UL)) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && (x == 0 || x == 1) [2024-02-02 09:14:55,149 INFO L101 nessWitnessExtractor]: Location invariant before [L771-L771] (((((((((0 <= __unbuffered_cnt) && (0 <= __unbuffered_p0_EAX)) && (0 <= x)) && (__unbuffered_p0_EAX <= 1)) && (x <= 1)) && (y == 2)) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && (x == 0 || x == 1) [2024-02-02 09:14:55,149 INFO L101 nessWitnessExtractor]: Location invariant before [L740-L740] (((((((((((((0 <= __unbuffered_cnt) && (0 <= __unbuffered_p0_EAX)) && (0 <= x)) && (0 <= y)) && (__unbuffered_p0_EAX <= 1)) && (x <= 1)) && (y <= 2)) && (y <= 127)) && ((unsigned long )arg == 0UL)) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && (x == 0 || x == 1)) && ((y == 0 || y == 1) || y == 2) [2024-02-02 09:14:55,150 INFO L101 nessWitnessExtractor]: Location invariant before [L739-L739] (unsigned long )arg == 0UL [2024-02-02 09:14:55,150 INFO L101 nessWitnessExtractor]: Location invariant before [L721-L721] ((((((((((0 <= __unbuffered_cnt) && (0 <= __unbuffered_p0_EAX)) && (0 <= x)) && (__unbuffered_p0_EAX <= 1)) && (x <= 1)) && (y == 2)) && ((unsigned long )arg == 0UL)) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && (x == 0 || x == 1) [2024-02-02 09:14:55,150 INFO L101 nessWitnessExtractor]: Location invariant before [L728-L728] (((((((((((((0 <= __unbuffered_cnt) && (0 <= __unbuffered_p0_EAX)) && (0 <= x)) && (0 <= y)) && (__unbuffered_p0_EAX <= 1)) && (x <= 1)) && (y <= 2)) && (y <= 127)) && ((unsigned long )arg == 0UL)) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && (x == 0 || x == 1)) && ((y == 0 || y == 1) || y == 2) [2024-02-02 09:14:55,150 INFO L101 nessWitnessExtractor]: Location invariant before [L737-L737] (((((((((((((0 <= __unbuffered_cnt) && (0 <= __unbuffered_p0_EAX)) && (0 <= x)) && (0 <= y)) && (__unbuffered_p0_EAX <= 1)) && (x <= 1)) && (y <= 2)) && (y <= 127)) && ((unsigned long )arg == 0UL)) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && (x == 0 || x == 1)) && ((y == 0 || y == 1) || y == 2) [2024-02-02 09:14:55,150 INFO L101 nessWitnessExtractor]: Location invariant before [L726-L726] (((((((((((((0 <= __unbuffered_cnt) && (0 <= __unbuffered_p0_EAX)) && (0 <= x)) && (0 <= y)) && (__unbuffered_p0_EAX <= 1)) && (x <= 1)) && (y <= 2)) && (y <= 127)) && ((unsigned long )arg == 0UL)) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && (x == 0 || x == 1)) && ((y == 0 || y == 1) || y == 2) [2024-02-02 09:14:55,150 INFO L101 nessWitnessExtractor]: Location invariant before [L720-L720] (((((((((((((0 <= __unbuffered_cnt) && (0 <= __unbuffered_p0_EAX)) && (0 <= x)) && (0 <= y)) && (__unbuffered_p0_EAX <= 1)) && (x <= 1)) && (y <= 2)) && (y <= 127)) && ((unsigned long )arg == 0UL)) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && (x == 0 || x == 1)) && ((y == 0 || y == 1) || y == 2) [2024-02-02 09:14:55,151 INFO L101 nessWitnessExtractor]: Location invariant before [L719-L719] (unsigned long )arg == 0UL [2024-02-02 09:14:55,151 INFO L101 nessWitnessExtractor]: Location invariant before [L766-L766] ((((((((((((0 <= __unbuffered_cnt) && (0 <= __unbuffered_p0_EAX)) && (0 <= x)) && (0 <= y)) && (__unbuffered_p0_EAX <= 1)) && (x <= 1)) && (y <= 2)) && (y <= 127)) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && (x == 0 || x == 1)) && ((y == 0 || y == 1) || y == 2) [2024-02-02 09:14:55,151 INFO L101 nessWitnessExtractor]: Location invariant before [L742-L742] (unsigned long )arg == 0UL [2024-02-02 09:14:55,151 INFO L101 nessWitnessExtractor]: Location invariant before [L738-L738] (((((((((((0 <= __unbuffered_cnt) && (0 <= __unbuffered_p0_EAX)) && (0 <= y)) && (__unbuffered_p0_EAX <= 1)) && (y <= 2)) && (y <= 127)) && (x == 1)) && ((unsigned long )arg == 0UL)) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && ((y == 0 || y == 1) || y == 2) [2024-02-02 09:14:55,151 INFO L101 nessWitnessExtractor]: Location invariant before [L746-L746] (((((((((((((0 <= __unbuffered_p0_EAX) && (0 <= x)) && (0 <= y)) && (1 <= __unbuffered_cnt)) && (__unbuffered_p0_EAX <= 1)) && (x <= 1)) && (y <= 2)) && (y <= 127)) && ((unsigned long )arg == 0UL)) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && (x == 0 || x == 1)) && ((y == 0 || y == 1) || y == 2) [2024-02-02 09:14:55,152 INFO L101 nessWitnessExtractor]: Location invariant before [L765-L765] ((((((((((((0 <= __unbuffered_cnt) && (0 <= __unbuffered_p0_EAX)) && (0 <= x)) && (0 <= y)) && (__unbuffered_p0_EAX <= 1)) && (x <= 1)) && (y <= 2)) && (y <= 127)) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && (x == 0 || x == 1)) && ((y == 0 || y == 1) || y == 2) [2024-02-02 09:14:55,152 INFO L101 nessWitnessExtractor]: Location invariant before [L736-L736] (unsigned long )arg == 0UL [2024-02-02 09:14:55,152 INFO L101 nessWitnessExtractor]: Location invariant before [L772-L772] ((((((((((((0 <= __unbuffered_cnt) && (0 <= __unbuffered_p0_EAX)) && (0 <= x)) && (0 <= y)) && (__unbuffered_p0_EAX <= 1)) && (x <= 1)) && (y <= 2)) && (y <= 127)) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && (x == 0 || x == 1)) && ((y == 0 || y == 1) || y == 2) [2024-02-02 09:14:55,152 INFO L101 nessWitnessExtractor]: Location invariant before [L743-L743] (((((((((((((0 <= __unbuffered_cnt) && (0 <= __unbuffered_p0_EAX)) && (0 <= x)) && (0 <= y)) && (__unbuffered_p0_EAX <= 1)) && (x <= 1)) && (y <= 2)) && (y <= 127)) && ((unsigned long )arg == 0UL)) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && (x == 0 || x == 1)) && ((y == 0 || y == 1) || y == 2) [2024-02-02 09:14:55,152 INFO L101 nessWitnessExtractor]: Location invariant before [L724-L724] (unsigned long )arg == 0UL [2024-02-02 09:14:55,152 INFO L101 nessWitnessExtractor]: Location invariant before [L732-L732] (unsigned long )arg == 0UL [2024-02-02 09:14:55,152 INFO L101 nessWitnessExtractor]: Location invariant before [L744-L744] (unsigned long )arg == 0UL [2024-02-02 09:14:55,197 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-02-02 09:14:55,351 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe033_tso.i[945,958] [2024-02-02 09:14:55,504 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-02-02 09:14:55,514 INFO L202 MainTranslator]: Completed pre-run [2024-02-02 09:14:55,530 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe033_tso.i[945,958] [2024-02-02 09:14:55,531 WARN L424 MainDispatcher]: Unable to annotate void __VERIFIER_assert(int expression) { if (!expression) { ERROR: {reach_error();abort();} }; return; } with a witness entry Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-02-02 09:14:55,711 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-02-02 09:14:55,767 INFO L206 MainTranslator]: Completed translation [2024-02-02 09:14:55,769 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:14:55 WrapperNode [2024-02-02 09:14:55,769 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-02-02 09:14:55,770 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-02-02 09:14:55,770 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-02-02 09:14:55,771 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-02-02 09:14:55,777 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:14:55" (1/1) ... [2024-02-02 09:14:55,805 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:14:55" (1/1) ... [2024-02-02 09:14:55,837 INFO L138 Inliner]: procedures = 175, calls = 42, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 63 [2024-02-02 09:14:55,837 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-02-02 09:14:55,838 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-02-02 09:14:55,838 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-02-02 09:14:55,839 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-02-02 09:14:55,847 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:14:55" (1/1) ... [2024-02-02 09:14:55,848 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:14:55" (1/1) ... [2024-02-02 09:14:55,859 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:14:55" (1/1) ... [2024-02-02 09:14:55,881 INFO L175 MemorySlicer]: Split 4 memory accesses to 3 slices as follows [2, 1, 1]. 50 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 2 writes are split as follows [0, 1, 1]. [2024-02-02 09:14:55,881 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:14:55" (1/1) ... [2024-02-02 09:14:55,882 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:14:55" (1/1) ... [2024-02-02 09:14:55,897 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:14:55" (1/1) ... [2024-02-02 09:14:55,900 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:14:55" (1/1) ... [2024-02-02 09:14:55,902 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:14:55" (1/1) ... [2024-02-02 09:14:55,903 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:14:55" (1/1) ... [2024-02-02 09:14:55,905 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-02-02 09:14:55,906 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-02-02 09:14:55,906 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-02-02 09:14:55,906 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-02-02 09:14:55,907 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:14:55" (1/1) ... [2024-02-02 09:14:55,912 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-02 09:14:55,918 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-02 09:14:55,958 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-02-02 09:14:55,968 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-02-02 09:14:56,003 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-02-02 09:14:56,004 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-02-02 09:14:56,004 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-02-02 09:14:56,005 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-02-02 09:14:56,005 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-02-02 09:14:56,005 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-02-02 09:14:56,005 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-02-02 09:14:56,005 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-02-02 09:14:56,006 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-02-02 09:14:56,006 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-02-02 09:14:56,006 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-02-02 09:14:56,006 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-02-02 09:14:56,006 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-02-02 09:14:56,006 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-02-02 09:14:56,007 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-02-02 09:14:56,007 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-02-02 09:14:56,007 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-02-02 09:14:56,008 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-02-02 09:14:56,110 INFO L244 CfgBuilder]: Building ICFG [2024-02-02 09:14:56,112 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-02-02 09:14:56,607 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-02-02 09:14:56,607 INFO L293 CfgBuilder]: Performing block encoding [2024-02-02 09:14:56,743 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-02-02 09:14:56,743 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-02-02 09:14:56,744 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.02 09:14:56 BoogieIcfgContainer [2024-02-02 09:14:56,745 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-02-02 09:14:56,747 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-02-02 09:14:56,747 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-02-02 09:14:56,749 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-02-02 09:14:56,750 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 02.02 09:14:53" (1/4) ... [2024-02-02 09:14:56,750 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34d06348 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 02.02 09:14:56, skipping insertion in model container [2024-02-02 09:14:56,750 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.02 09:14:54" (2/4) ... [2024-02-02 09:14:56,751 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34d06348 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.02 09:14:56, skipping insertion in model container [2024-02-02 09:14:56,751 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:14:55" (3/4) ... [2024-02-02 09:14:56,751 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34d06348 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.02 09:14:56, skipping insertion in model container [2024-02-02 09:14:56,751 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.02 09:14:56" (4/4) ... [2024-02-02 09:14:56,752 INFO L112 eAbstractionObserver]: Analyzing ICFG safe033_tso.i [2024-02-02 09:14:56,765 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-02-02 09:14:56,765 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 33 error locations. [2024-02-02 09:14:56,765 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-02-02 09:14:56,813 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-02-02 09:14:56,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 78 places, 72 transitions, 152 flow [2024-02-02 09:14:56,863 INFO L124 PetriNetUnfolderBase]: 1/70 cut-off events. [2024-02-02 09:14:56,863 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-02 09:14:56,866 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 70 events. 1/70 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 246 event pairs, 0 based on Foata normal form. 0/36 useless extension candidates. Maximal degree in co-relation 68. Up to 2 conditions per place. [2024-02-02 09:14:56,867 INFO L82 GeneralOperation]: Start removeDead. Operand has 78 places, 72 transitions, 152 flow [2024-02-02 09:14:56,869 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 76 places, 70 transitions, 146 flow [2024-02-02 09:14:56,876 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-02 09:14:56,881 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@316da2be, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-02 09:14:56,881 INFO L358 AbstractCegarLoop]: Starting to check reachability of 61 error locations. [2024-02-02 09:14:56,882 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-02 09:14:56,882 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2024-02-02 09:14:56,883 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-02 09:14:56,883 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:14:56,883 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-02-02 09:14:56,884 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 58 more)] === [2024-02-02 09:14:56,887 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:14:56,887 INFO L85 PathProgramCache]: Analyzing trace with hash 10090, now seen corresponding path program 1 times [2024-02-02 09:14:56,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:14:56,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912069482] [2024-02-02 09:14:56,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:14:56,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:14:57,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:14:57,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:14:57,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:14:57,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912069482] [2024-02-02 09:14:57,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912069482] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:14:57,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:14:57,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-02-02 09:14:57,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150819334] [2024-02-02 09:14:57,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:14:57,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-02 09:14:57,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:14:57,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-02 09:14:57,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-02 09:14:57,305 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 72 [2024-02-02 09:14:57,307 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 70 transitions, 146 flow. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:14:57,307 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:14:57,307 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 72 [2024-02-02 09:14:57,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:14:58,004 INFO L124 PetriNetUnfolderBase]: 2237/4148 cut-off events. [2024-02-02 09:14:58,004 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2024-02-02 09:14:58,011 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7729 conditions, 4148 events. 2237/4148 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 268. Compared 31903 event pairs, 1699 based on Foata normal form. 120/2578 useless extension candidates. Maximal degree in co-relation 7717. Up to 3523 conditions per place. [2024-02-02 09:14:58,033 INFO L140 encePairwiseOnDemand]: 57/72 looper letters, 40 selfloop transitions, 3 changer transitions 0/68 dead transitions. [2024-02-02 09:14:58,034 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 68 transitions, 231 flow [2024-02-02 09:14:58,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-02 09:14:58,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-02 09:14:58,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 139 transitions. [2024-02-02 09:14:58,043 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6435185185185185 [2024-02-02 09:14:58,044 INFO L175 Difference]: Start difference. First operand has 76 places, 70 transitions, 146 flow. Second operand 3 states and 139 transitions. [2024-02-02 09:14:58,045 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 68 transitions, 231 flow [2024-02-02 09:14:58,047 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 68 transitions, 228 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-02 09:14:58,049 INFO L231 Difference]: Finished difference. Result has 68 places, 62 transitions, 145 flow [2024-02-02 09:14:58,050 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=145, PETRI_PLACES=68, PETRI_TRANSITIONS=62} [2024-02-02 09:14:58,053 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, -8 predicate places. [2024-02-02 09:14:58,053 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 62 transitions, 145 flow [2024-02-02 09:14:58,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:14:58,053 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:14:58,054 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-02-02 09:14:58,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-02-02 09:14:58,054 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 58 more)] === [2024-02-02 09:14:58,054 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:14:58,055 INFO L85 PathProgramCache]: Analyzing trace with hash 300991725, now seen corresponding path program 1 times [2024-02-02 09:14:58,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:14:58,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904445021] [2024-02-02 09:14:58,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:14:58,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:14:58,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:14:58,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:14:58,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:14:58,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904445021] [2024-02-02 09:14:58,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904445021] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:14:58,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:14:58,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-02 09:14:58,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649537769] [2024-02-02 09:14:58,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:14:58,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-02 09:14:58,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:14:58,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-02 09:14:58,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-02 09:14:58,177 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 72 [2024-02-02 09:14:58,177 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 62 transitions, 145 flow. Second operand has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:14:58,177 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:14:58,177 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 72 [2024-02-02 09:14:58,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:14:58,738 INFO L124 PetriNetUnfolderBase]: 2406/4388 cut-off events. [2024-02-02 09:14:58,738 INFO L125 PetriNetUnfolderBase]: For 387/387 co-relation queries the response was YES. [2024-02-02 09:14:58,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8717 conditions, 4388 events. 2406/4388 cut-off events. For 387/387 co-relation queries the response was YES. Maximal size of possible extension queue 269. Compared 32762 event pairs, 1963 based on Foata normal form. 544/3545 useless extension candidates. Maximal degree in co-relation 8704. Up to 3644 conditions per place. [2024-02-02 09:14:58,764 INFO L140 encePairwiseOnDemand]: 64/72 looper letters, 57 selfloop transitions, 2 changer transitions 0/77 dead transitions. [2024-02-02 09:14:58,764 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 77 transitions, 302 flow [2024-02-02 09:14:58,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-02 09:14:58,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-02 09:14:58,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 147 transitions. [2024-02-02 09:14:58,766 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5104166666666666 [2024-02-02 09:14:58,766 INFO L175 Difference]: Start difference. First operand has 68 places, 62 transitions, 145 flow. Second operand 4 states and 147 transitions. [2024-02-02 09:14:58,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 77 transitions, 302 flow [2024-02-02 09:14:58,767 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 77 transitions, 298 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-02-02 09:14:58,768 INFO L231 Difference]: Finished difference. Result has 64 places, 56 transitions, 134 flow [2024-02-02 09:14:58,768 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=134, PETRI_PLACES=64, PETRI_TRANSITIONS=56} [2024-02-02 09:14:58,769 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, -12 predicate places. [2024-02-02 09:14:58,769 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 56 transitions, 134 flow [2024-02-02 09:14:58,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:14:58,770 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:14:58,770 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-02-02 09:14:58,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-02-02 09:14:58,770 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 58 more)] === [2024-02-02 09:14:58,770 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:14:58,770 INFO L85 PathProgramCache]: Analyzing trace with hash 740809241, now seen corresponding path program 1 times [2024-02-02 09:14:58,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:14:58,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528870432] [2024-02-02 09:14:58,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:14:58,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:14:58,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:14:58,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:14:58,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:14:58,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528870432] [2024-02-02 09:14:58,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528870432] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:14:58,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:14:58,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-02 09:14:58,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746941348] [2024-02-02 09:14:58,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:14:58,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-02 09:14:58,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:14:58,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-02 09:14:58,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-02-02 09:14:58,998 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 72 [2024-02-02 09:14:58,998 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 56 transitions, 134 flow. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:14:58,998 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:14:58,998 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 72 [2024-02-02 09:14:58,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:14:59,556 INFO L124 PetriNetUnfolderBase]: 3367/5847 cut-off events. [2024-02-02 09:14:59,556 INFO L125 PetriNetUnfolderBase]: For 641/647 co-relation queries the response was YES. [2024-02-02 09:14:59,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11901 conditions, 5847 events. 3367/5847 cut-off events. For 641/647 co-relation queries the response was YES. Maximal size of possible extension queue 342. Compared 42603 event pairs, 2568 based on Foata normal form. 11/4209 useless extension candidates. Maximal degree in co-relation 11887. Up to 5268 conditions per place. [2024-02-02 09:14:59,588 INFO L140 encePairwiseOnDemand]: 67/72 looper letters, 51 selfloop transitions, 5 changer transitions 0/69 dead transitions. [2024-02-02 09:14:59,588 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 69 transitions, 280 flow [2024-02-02 09:14:59,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-02 09:14:59,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-02 09:14:59,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 117 transitions. [2024-02-02 09:14:59,590 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-02-02 09:14:59,590 INFO L175 Difference]: Start difference. First operand has 64 places, 56 transitions, 134 flow. Second operand 4 states and 117 transitions. [2024-02-02 09:14:59,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 69 transitions, 280 flow [2024-02-02 09:14:59,591 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 69 transitions, 276 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-02 09:14:59,592 INFO L231 Difference]: Finished difference. Result has 67 places, 58 transitions, 157 flow [2024-02-02 09:14:59,592 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=131, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=157, PETRI_PLACES=67, PETRI_TRANSITIONS=58} [2024-02-02 09:14:59,592 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, -9 predicate places. [2024-02-02 09:14:59,593 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 58 transitions, 157 flow [2024-02-02 09:14:59,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:14:59,593 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:14:59,593 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:14:59,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-02-02 09:14:59,593 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting P1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 58 more)] === [2024-02-02 09:14:59,594 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:14:59,594 INFO L85 PathProgramCache]: Analyzing trace with hash 1489491865, now seen corresponding path program 1 times [2024-02-02 09:14:59,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:14:59,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646113454] [2024-02-02 09:14:59,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:14:59,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:14:59,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:14:59,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:14:59,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:14:59,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646113454] [2024-02-02 09:14:59,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646113454] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:14:59,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:14:59,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-02 09:14:59,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490555866] [2024-02-02 09:14:59,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:14:59,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-02 09:14:59,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:14:59,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-02 09:14:59,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-02 09:14:59,657 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 72 [2024-02-02 09:14:59,657 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 58 transitions, 157 flow. Second operand has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:14:59,657 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:14:59,657 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 72 [2024-02-02 09:14:59,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:15:00,106 INFO L124 PetriNetUnfolderBase]: 2504/4576 cut-off events. [2024-02-02 09:15:00,106 INFO L125 PetriNetUnfolderBase]: For 546/554 co-relation queries the response was YES. [2024-02-02 09:15:00,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9227 conditions, 4576 events. 2504/4576 cut-off events. For 546/554 co-relation queries the response was YES. Maximal size of possible extension queue 274. Compared 34708 event pairs, 355 based on Foata normal form. 550/3882 useless extension candidates. Maximal degree in co-relation 9211. Up to 3759 conditions per place. [2024-02-02 09:15:00,130 INFO L140 encePairwiseOnDemand]: 65/72 looper letters, 67 selfloop transitions, 2 changer transitions 0/83 dead transitions. [2024-02-02 09:15:00,131 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 83 transitions, 359 flow [2024-02-02 09:15:00,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-02 09:15:00,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-02 09:15:00,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 159 transitions. [2024-02-02 09:15:00,132 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5520833333333334 [2024-02-02 09:15:00,133 INFO L175 Difference]: Start difference. First operand has 67 places, 58 transitions, 157 flow. Second operand 4 states and 159 transitions. [2024-02-02 09:15:00,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 83 transitions, 359 flow [2024-02-02 09:15:00,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 83 transitions, 347 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-02 09:15:00,135 INFO L231 Difference]: Finished difference. Result has 63 places, 53 transitions, 143 flow [2024-02-02 09:15:00,135 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=139, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=143, PETRI_PLACES=63, PETRI_TRANSITIONS=53} [2024-02-02 09:15:00,136 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, -13 predicate places. [2024-02-02 09:15:00,136 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 53 transitions, 143 flow [2024-02-02 09:15:00,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:00,136 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:15:00,136 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:15:00,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-02-02 09:15:00,137 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 58 more)] === [2024-02-02 09:15:00,137 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:15:00,137 INFO L85 PathProgramCache]: Analyzing trace with hash -1070392057, now seen corresponding path program 1 times [2024-02-02 09:15:00,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:15:00,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558149890] [2024-02-02 09:15:00,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:15:00,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:15:00,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:15:00,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:15:00,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:15:00,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558149890] [2024-02-02 09:15:00,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558149890] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:15:00,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:15:00,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-02 09:15:00,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157902212] [2024-02-02 09:15:00,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:15:00,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-02 09:15:00,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:15:00,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-02 09:15:00,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-02-02 09:15:00,326 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 72 [2024-02-02 09:15:00,327 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 53 transitions, 143 flow. Second operand has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:00,327 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:15:00,327 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 72 [2024-02-02 09:15:00,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:15:00,859 INFO L124 PetriNetUnfolderBase]: 3456/5932 cut-off events. [2024-02-02 09:15:00,859 INFO L125 PetriNetUnfolderBase]: For 766/774 co-relation queries the response was YES. [2024-02-02 09:15:00,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12344 conditions, 5932 events. 3456/5932 cut-off events. For 766/774 co-relation queries the response was YES. Maximal size of possible extension queue 326. Compared 41676 event pairs, 2831 based on Foata normal form. 11/4308 useless extension candidates. Maximal degree in co-relation 12329. Up to 5483 conditions per place. [2024-02-02 09:15:00,882 INFO L140 encePairwiseOnDemand]: 67/72 looper letters, 46 selfloop transitions, 6 changer transitions 0/62 dead transitions. [2024-02-02 09:15:00,883 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 62 transitions, 274 flow [2024-02-02 09:15:00,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-02 09:15:00,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-02 09:15:00,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 120 transitions. [2024-02-02 09:15:00,884 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-02-02 09:15:00,885 INFO L175 Difference]: Start difference. First operand has 63 places, 53 transitions, 143 flow. Second operand 4 states and 120 transitions. [2024-02-02 09:15:00,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 62 transitions, 274 flow [2024-02-02 09:15:00,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 62 transitions, 268 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-02 09:15:00,888 INFO L231 Difference]: Finished difference. Result has 66 places, 55 transitions, 170 flow [2024-02-02 09:15:00,889 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=170, PETRI_PLACES=66, PETRI_TRANSITIONS=55} [2024-02-02 09:15:00,891 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, -10 predicate places. [2024-02-02 09:15:00,891 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 55 transitions, 170 flow [2024-02-02 09:15:00,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:00,891 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:15:00,891 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:15:00,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-02-02 09:15:00,892 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 58 more)] === [2024-02-02 09:15:00,893 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:15:00,893 INFO L85 PathProgramCache]: Analyzing trace with hash -1046878020, now seen corresponding path program 1 times [2024-02-02 09:15:00,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:15:00,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983585257] [2024-02-02 09:15:00,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:15:00,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:15:00,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:15:01,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:15:01,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:15:01,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983585257] [2024-02-02 09:15:01,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983585257] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:15:01,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:15:01,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-02 09:15:01,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993960569] [2024-02-02 09:15:01,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:15:01,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-02-02 09:15:01,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:15:01,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-02-02 09:15:01,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-02-02 09:15:01,125 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 72 [2024-02-02 09:15:01,125 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 55 transitions, 170 flow. Second operand has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 6 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:01,125 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:15:01,125 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 72 [2024-02-02 09:15:01,126 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:15:01,609 INFO L124 PetriNetUnfolderBase]: 2923/5021 cut-off events. [2024-02-02 09:15:01,609 INFO L125 PetriNetUnfolderBase]: For 663/684 co-relation queries the response was YES. [2024-02-02 09:15:01,620 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10527 conditions, 5021 events. 2923/5021 cut-off events. For 663/684 co-relation queries the response was YES. Maximal size of possible extension queue 281. Compared 34575 event pairs, 1644 based on Foata normal form. 36/3650 useless extension candidates. Maximal degree in co-relation 10509. Up to 4476 conditions per place. [2024-02-02 09:15:01,634 INFO L140 encePairwiseOnDemand]: 61/72 looper letters, 61 selfloop transitions, 8 changer transitions 0/78 dead transitions. [2024-02-02 09:15:01,634 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 78 transitions, 365 flow [2024-02-02 09:15:01,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-02 09:15:01,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-02 09:15:01,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 154 transitions. [2024-02-02 09:15:01,636 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42777777777777776 [2024-02-02 09:15:01,636 INFO L175 Difference]: Start difference. First operand has 66 places, 55 transitions, 170 flow. Second operand 5 states and 154 transitions. [2024-02-02 09:15:01,636 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 78 transitions, 365 flow [2024-02-02 09:15:01,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 78 transitions, 360 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-02-02 09:15:01,638 INFO L231 Difference]: Finished difference. Result has 70 places, 57 transitions, 207 flow [2024-02-02 09:15:01,638 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=165, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=207, PETRI_PLACES=70, PETRI_TRANSITIONS=57} [2024-02-02 09:15:01,639 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, -6 predicate places. [2024-02-02 09:15:01,639 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 57 transitions, 207 flow [2024-02-02 09:15:01,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 6 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:01,639 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:15:01,639 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:15:01,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-02-02 09:15:01,640 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 58 more)] === [2024-02-02 09:15:01,640 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:15:01,640 INFO L85 PathProgramCache]: Analyzing trace with hash 2145317741, now seen corresponding path program 1 times [2024-02-02 09:15:01,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:15:01,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944841536] [2024-02-02 09:15:01,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:15:01,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:15:01,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:15:01,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:15:01,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:15:01,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944841536] [2024-02-02 09:15:01,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944841536] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:15:01,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:15:01,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-02 09:15:01,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223629819] [2024-02-02 09:15:01,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:15:01,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-02 09:15:01,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:15:01,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-02 09:15:01,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-02-02 09:15:01,792 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 72 [2024-02-02 09:15:01,793 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 57 transitions, 207 flow. Second operand has 5 states, 5 states have (on average 29.6) internal successors, (148), 5 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:01,793 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:15:01,793 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 72 [2024-02-02 09:15:01,793 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:15:02,293 INFO L124 PetriNetUnfolderBase]: 1914/3418 cut-off events. [2024-02-02 09:15:02,293 INFO L125 PetriNetUnfolderBase]: For 1085/1087 co-relation queries the response was YES. [2024-02-02 09:15:02,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7731 conditions, 3418 events. 1914/3418 cut-off events. For 1085/1087 co-relation queries the response was YES. Maximal size of possible extension queue 224. Compared 23606 event pairs, 1504 based on Foata normal form. 14/2635 useless extension candidates. Maximal degree in co-relation 7711. Up to 3055 conditions per place. [2024-02-02 09:15:02,313 INFO L140 encePairwiseOnDemand]: 66/72 looper letters, 44 selfloop transitions, 7 changer transitions 0/67 dead transitions. [2024-02-02 09:15:02,314 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 67 transitions, 335 flow [2024-02-02 09:15:02,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-02 09:15:02,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-02 09:15:02,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 161 transitions. [2024-02-02 09:15:02,315 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5590277777777778 [2024-02-02 09:15:02,315 INFO L175 Difference]: Start difference. First operand has 70 places, 57 transitions, 207 flow. Second operand 4 states and 161 transitions. [2024-02-02 09:15:02,315 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 67 transitions, 335 flow [2024-02-02 09:15:02,317 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 67 transitions, 321 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-02-02 09:15:02,318 INFO L231 Difference]: Finished difference. Result has 71 places, 59 transitions, 225 flow [2024-02-02 09:15:02,318 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=193, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=225, PETRI_PLACES=71, PETRI_TRANSITIONS=59} [2024-02-02 09:15:02,319 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, -5 predicate places. [2024-02-02 09:15:02,319 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 59 transitions, 225 flow [2024-02-02 09:15:02,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.6) internal successors, (148), 5 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:02,319 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:15:02,319 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:15:02,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-02-02 09:15:02,320 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 58 more)] === [2024-02-02 09:15:02,320 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:15:02,320 INFO L85 PathProgramCache]: Analyzing trace with hash 2145397610, now seen corresponding path program 1 times [2024-02-02 09:15:02,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:15:02,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105149861] [2024-02-02 09:15:02,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:15:02,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:15:02,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:15:02,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:15:02,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:15:02,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105149861] [2024-02-02 09:15:02,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105149861] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:15:02,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:15:02,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-02 09:15:02,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344245005] [2024-02-02 09:15:02,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:15:02,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-02-02 09:15:02,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:15:02,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-02-02 09:15:02,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-02-02 09:15:02,500 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 72 [2024-02-02 09:15:02,501 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 59 transitions, 225 flow. Second operand has 6 states, 6 states have (on average 19.666666666666668) internal successors, (118), 6 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:02,501 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:15:02,501 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 72 [2024-02-02 09:15:02,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:15:02,974 INFO L124 PetriNetUnfolderBase]: 2724/4738 cut-off events. [2024-02-02 09:15:02,974 INFO L125 PetriNetUnfolderBase]: For 2460/2468 co-relation queries the response was YES. [2024-02-02 09:15:02,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11280 conditions, 4738 events. 2724/4738 cut-off events. For 2460/2468 co-relation queries the response was YES. Maximal size of possible extension queue 280. Compared 31674 event pairs, 2138 based on Foata normal form. 17/3947 useless extension candidates. Maximal degree in co-relation 11259. Up to 4325 conditions per place. [2024-02-02 09:15:02,999 INFO L140 encePairwiseOnDemand]: 66/72 looper letters, 52 selfloop transitions, 8 changer transitions 0/70 dead transitions. [2024-02-02 09:15:03,000 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 70 transitions, 372 flow [2024-02-02 09:15:03,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-02 09:15:03,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-02 09:15:03,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 148 transitions. [2024-02-02 09:15:03,001 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4111111111111111 [2024-02-02 09:15:03,001 INFO L175 Difference]: Start difference. First operand has 71 places, 59 transitions, 225 flow. Second operand 5 states and 148 transitions. [2024-02-02 09:15:03,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 70 transitions, 372 flow [2024-02-02 09:15:03,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 70 transitions, 360 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-02-02 09:15:03,004 INFO L231 Difference]: Finished difference. Result has 74 places, 59 transitions, 235 flow [2024-02-02 09:15:03,004 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=213, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=235, PETRI_PLACES=74, PETRI_TRANSITIONS=59} [2024-02-02 09:15:03,005 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, -2 predicate places. [2024-02-02 09:15:03,005 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 59 transitions, 235 flow [2024-02-02 09:15:03,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.666666666666668) internal successors, (118), 6 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:03,005 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:15:03,005 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:15:03,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-02-02 09:15:03,006 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 58 more)] === [2024-02-02 09:15:03,006 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:15:03,006 INFO L85 PathProgramCache]: Analyzing trace with hash 2056067202, now seen corresponding path program 1 times [2024-02-02 09:15:03,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:15:03,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530528185] [2024-02-02 09:15:03,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:15:03,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:15:03,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:15:03,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:15:03,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:15:03,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530528185] [2024-02-02 09:15:03,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530528185] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:15:03,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:15:03,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-02 09:15:03,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751001199] [2024-02-02 09:15:03,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:15:03,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-02-02 09:15:03,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:15:03,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-02-02 09:15:03,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-02-02 09:15:03,207 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 72 [2024-02-02 09:15:03,208 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 59 transitions, 235 flow. Second operand has 6 states, 6 states have (on average 19.5) internal successors, (117), 6 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:03,208 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:15:03,208 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 72 [2024-02-02 09:15:03,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:15:03,662 INFO L124 PetriNetUnfolderBase]: 2744/4776 cut-off events. [2024-02-02 09:15:03,662 INFO L125 PetriNetUnfolderBase]: For 2589/2597 co-relation queries the response was YES. [2024-02-02 09:15:03,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11494 conditions, 4776 events. 2744/4776 cut-off events. For 2589/2597 co-relation queries the response was YES. Maximal size of possible extension queue 280. Compared 31945 event pairs, 1831 based on Foata normal form. 20/3990 useless extension candidates. Maximal degree in co-relation 11472. Up to 4244 conditions per place. [2024-02-02 09:15:03,688 INFO L140 encePairwiseOnDemand]: 66/72 looper letters, 61 selfloop transitions, 10 changer transitions 0/81 dead transitions. [2024-02-02 09:15:03,689 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 81 transitions, 435 flow [2024-02-02 09:15:03,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-02 09:15:03,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-02 09:15:03,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 158 transitions. [2024-02-02 09:15:03,690 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4388888888888889 [2024-02-02 09:15:03,690 INFO L175 Difference]: Start difference. First operand has 74 places, 59 transitions, 235 flow. Second operand 5 states and 158 transitions. [2024-02-02 09:15:03,690 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 81 transitions, 435 flow [2024-02-02 09:15:03,693 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 81 transitions, 419 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-02-02 09:15:03,694 INFO L231 Difference]: Finished difference. Result has 76 places, 62 transitions, 263 flow [2024-02-02 09:15:03,694 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=219, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=263, PETRI_PLACES=76, PETRI_TRANSITIONS=62} [2024-02-02 09:15:03,694 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 0 predicate places. [2024-02-02 09:15:03,695 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 62 transitions, 263 flow [2024-02-02 09:15:03,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.5) internal successors, (117), 6 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:03,695 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:15:03,695 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:15:03,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-02-02 09:15:03,695 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 58 more)] === [2024-02-02 09:15:03,701 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:15:03,702 INFO L85 PathProgramCache]: Analyzing trace with hash 2081862612, now seen corresponding path program 2 times [2024-02-02 09:15:03,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:15:03,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689898569] [2024-02-02 09:15:03,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:15:03,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:15:03,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:15:03,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:15:03,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:15:03,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689898569] [2024-02-02 09:15:03,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689898569] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:15:03,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:15:03,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-02 09:15:03,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523476779] [2024-02-02 09:15:03,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:15:03,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-02-02 09:15:03,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:15:03,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-02-02 09:15:03,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-02-02 09:15:03,909 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 72 [2024-02-02 09:15:03,909 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 62 transitions, 263 flow. Second operand has 6 states, 6 states have (on average 19.5) internal successors, (117), 6 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:03,909 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:15:03,910 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 72 [2024-02-02 09:15:03,910 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:15:04,375 INFO L124 PetriNetUnfolderBase]: 2724/4716 cut-off events. [2024-02-02 09:15:04,375 INFO L125 PetriNetUnfolderBase]: For 2813/2821 co-relation queries the response was YES. [2024-02-02 09:15:04,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11515 conditions, 4716 events. 2724/4716 cut-off events. For 2813/2821 co-relation queries the response was YES. Maximal size of possible extension queue 280. Compared 31608 event pairs, 1856 based on Foata normal form. 20/3932 useless extension candidates. Maximal degree in co-relation 11491. Up to 4241 conditions per place. [2024-02-02 09:15:04,398 INFO L140 encePairwiseOnDemand]: 66/72 looper letters, 60 selfloop transitions, 11 changer transitions 0/81 dead transitions. [2024-02-02 09:15:04,398 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 81 transitions, 451 flow [2024-02-02 09:15:04,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-02 09:15:04,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-02 09:15:04,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 157 transitions. [2024-02-02 09:15:04,400 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4361111111111111 [2024-02-02 09:15:04,400 INFO L175 Difference]: Start difference. First operand has 76 places, 62 transitions, 263 flow. Second operand 5 states and 157 transitions. [2024-02-02 09:15:04,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 81 transitions, 451 flow [2024-02-02 09:15:04,402 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 81 transitions, 429 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-02-02 09:15:04,403 INFO L231 Difference]: Finished difference. Result has 78 places, 63 transitions, 275 flow [2024-02-02 09:15:04,404 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=243, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=275, PETRI_PLACES=78, PETRI_TRANSITIONS=63} [2024-02-02 09:15:04,404 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 2 predicate places. [2024-02-02 09:15:04,404 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 63 transitions, 275 flow [2024-02-02 09:15:04,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.5) internal successors, (117), 6 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:04,405 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:15:04,405 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:15:04,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-02-02 09:15:04,405 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 58 more)] === [2024-02-02 09:15:04,405 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:15:04,405 INFO L85 PathProgramCache]: Analyzing trace with hash 1632950624, now seen corresponding path program 1 times [2024-02-02 09:15:04,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:15:04,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192962973] [2024-02-02 09:15:04,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:15:04,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:15:04,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:15:04,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:15:04,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:15:04,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192962973] [2024-02-02 09:15:04,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192962973] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:15:04,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:15:04,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-02 09:15:04,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355306073] [2024-02-02 09:15:04,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:15:04,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-02-02 09:15:04,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:15:04,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-02-02 09:15:04,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-02-02 09:15:04,571 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 72 [2024-02-02 09:15:04,571 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 63 transitions, 275 flow. Second operand has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:04,571 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:15:04,571 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 72 [2024-02-02 09:15:04,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:15:04,984 INFO L124 PetriNetUnfolderBase]: 2795/4820 cut-off events. [2024-02-02 09:15:04,985 INFO L125 PetriNetUnfolderBase]: For 2735/2774 co-relation queries the response was YES. [2024-02-02 09:15:04,995 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11732 conditions, 4820 events. 2795/4820 cut-off events. For 2735/2774 co-relation queries the response was YES. Maximal size of possible extension queue 285. Compared 33259 event pairs, 2187 based on Foata normal form. 25/3927 useless extension candidates. Maximal degree in co-relation 11707. Up to 4402 conditions per place. [2024-02-02 09:15:05,010 INFO L140 encePairwiseOnDemand]: 66/72 looper letters, 58 selfloop transitions, 11 changer transitions 0/79 dead transitions. [2024-02-02 09:15:05,010 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 79 transitions, 463 flow [2024-02-02 09:15:05,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-02 09:15:05,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-02 09:15:05,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 142 transitions. [2024-02-02 09:15:05,011 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39444444444444443 [2024-02-02 09:15:05,011 INFO L175 Difference]: Start difference. First operand has 78 places, 63 transitions, 275 flow. Second operand 5 states and 142 transitions. [2024-02-02 09:15:05,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 79 transitions, 463 flow [2024-02-02 09:15:05,013 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 79 transitions, 448 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-02 09:15:05,014 INFO L231 Difference]: Finished difference. Result has 82 places, 67 transitions, 312 flow [2024-02-02 09:15:05,014 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=312, PETRI_PLACES=82, PETRI_TRANSITIONS=67} [2024-02-02 09:15:05,015 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 6 predicate places. [2024-02-02 09:15:05,015 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 67 transitions, 312 flow [2024-02-02 09:15:05,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:05,015 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:15:05,015 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:15:05,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-02-02 09:15:05,016 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 58 more)] === [2024-02-02 09:15:05,016 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:15:05,016 INFO L85 PathProgramCache]: Analyzing trace with hash -2093626764, now seen corresponding path program 2 times [2024-02-02 09:15:05,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:15:05,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172764189] [2024-02-02 09:15:05,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:15:05,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:15:05,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:15:05,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:15:05,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:15:05,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172764189] [2024-02-02 09:15:05,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172764189] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:15:05,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:15:05,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-02 09:15:05,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820723611] [2024-02-02 09:15:05,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:15:05,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-02-02 09:15:05,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:15:05,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-02-02 09:15:05,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-02-02 09:15:05,186 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 72 [2024-02-02 09:15:05,187 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 67 transitions, 312 flow. Second operand has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:05,187 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:15:05,187 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 72 [2024-02-02 09:15:05,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:15:05,589 INFO L124 PetriNetUnfolderBase]: 2790/4816 cut-off events. [2024-02-02 09:15:05,590 INFO L125 PetriNetUnfolderBase]: For 3056/3083 co-relation queries the response was YES. [2024-02-02 09:15:05,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11830 conditions, 4816 events. 2790/4816 cut-off events. For 3056/3083 co-relation queries the response was YES. Maximal size of possible extension queue 285. Compared 33179 event pairs, 2184 based on Foata normal form. 22/3922 useless extension candidates. Maximal degree in co-relation 11802. Up to 4399 conditions per place. [2024-02-02 09:15:05,614 INFO L140 encePairwiseOnDemand]: 66/72 looper letters, 56 selfloop transitions, 11 changer transitions 0/77 dead transitions. [2024-02-02 09:15:05,614 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 77 transitions, 470 flow [2024-02-02 09:15:05,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-02 09:15:05,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-02 09:15:05,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 140 transitions. [2024-02-02 09:15:05,615 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3888888888888889 [2024-02-02 09:15:05,616 INFO L175 Difference]: Start difference. First operand has 82 places, 67 transitions, 312 flow. Second operand 5 states and 140 transitions. [2024-02-02 09:15:05,616 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 77 transitions, 470 flow [2024-02-02 09:15:05,618 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 77 transitions, 460 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-02-02 09:15:05,619 INFO L231 Difference]: Finished difference. Result has 86 places, 67 transitions, 329 flow [2024-02-02 09:15:05,619 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=302, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=329, PETRI_PLACES=86, PETRI_TRANSITIONS=67} [2024-02-02 09:15:05,620 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 10 predicate places. [2024-02-02 09:15:05,620 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 67 transitions, 329 flow [2024-02-02 09:15:05,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:05,620 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:15:05,620 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:15:05,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-02-02 09:15:05,620 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 58 more)] === [2024-02-02 09:15:05,621 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:15:05,621 INFO L85 PathProgramCache]: Analyzing trace with hash 66099818, now seen corresponding path program 1 times [2024-02-02 09:15:05,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:15:05,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918940103] [2024-02-02 09:15:05,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:15:05,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:15:05,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:15:05,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:15:05,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:15:05,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918940103] [2024-02-02 09:15:05,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918940103] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:15:05,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:15:05,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-02 09:15:05,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756378080] [2024-02-02 09:15:05,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:15:05,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-02-02 09:15:05,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:15:05,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-02-02 09:15:05,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-02-02 09:15:05,748 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 72 [2024-02-02 09:15:05,748 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 67 transitions, 329 flow. Second operand has 6 states, 6 states have (on average 29.5) internal successors, (177), 6 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:05,748 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:15:05,748 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 72 [2024-02-02 09:15:05,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:15:06,079 INFO L124 PetriNetUnfolderBase]: 1518/2844 cut-off events. [2024-02-02 09:15:06,079 INFO L125 PetriNetUnfolderBase]: For 2352/2360 co-relation queries the response was YES. [2024-02-02 09:15:06,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6955 conditions, 2844 events. 1518/2844 cut-off events. For 2352/2360 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 19399 event pairs, 906 based on Foata normal form. 88/2407 useless extension candidates. Maximal degree in co-relation 6925. Up to 2007 conditions per place. [2024-02-02 09:15:06,091 INFO L140 encePairwiseOnDemand]: 64/72 looper letters, 67 selfloop transitions, 15 changer transitions 0/100 dead transitions. [2024-02-02 09:15:06,091 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 100 transitions, 597 flow [2024-02-02 09:15:06,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-02 09:15:06,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-02 09:15:06,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 212 transitions. [2024-02-02 09:15:06,092 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5888888888888889 [2024-02-02 09:15:06,092 INFO L175 Difference]: Start difference. First operand has 86 places, 67 transitions, 329 flow. Second operand 5 states and 212 transitions. [2024-02-02 09:15:06,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 100 transitions, 597 flow [2024-02-02 09:15:06,094 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 100 transitions, 565 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-02-02 09:15:06,095 INFO L231 Difference]: Finished difference. Result has 88 places, 76 transitions, 401 flow [2024-02-02 09:15:06,096 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=297, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=401, PETRI_PLACES=88, PETRI_TRANSITIONS=76} [2024-02-02 09:15:06,096 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 12 predicate places. [2024-02-02 09:15:06,096 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 76 transitions, 401 flow [2024-02-02 09:15:06,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 29.5) internal successors, (177), 6 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:06,097 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:15:06,097 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:15:06,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-02-02 09:15:06,097 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 58 more)] === [2024-02-02 09:15:06,097 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:15:06,097 INFO L85 PathProgramCache]: Analyzing trace with hash 142814637, now seen corresponding path program 1 times [2024-02-02 09:15:06,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:15:06,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442541557] [2024-02-02 09:15:06,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:15:06,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:15:06,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:15:06,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:15:06,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:15:06,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442541557] [2024-02-02 09:15:06,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442541557] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:15:06,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:15:06,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-02 09:15:06,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279682496] [2024-02-02 09:15:06,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:15:06,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-02 09:15:06,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:15:06,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-02 09:15:06,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-02-02 09:15:06,297 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 72 [2024-02-02 09:15:06,298 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 76 transitions, 401 flow. Second operand has 7 states, 7 states have (on average 19.714285714285715) internal successors, (138), 7 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:06,298 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:15:06,298 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 72 [2024-02-02 09:15:06,298 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:15:06,730 INFO L124 PetriNetUnfolderBase]: 2051/3751 cut-off events. [2024-02-02 09:15:06,731 INFO L125 PetriNetUnfolderBase]: For 3996/4007 co-relation queries the response was YES. [2024-02-02 09:15:06,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9887 conditions, 3751 events. 2051/3751 cut-off events. For 3996/4007 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 24900 event pairs, 791 based on Foata normal form. 33/3310 useless extension candidates. Maximal degree in co-relation 9855. Up to 2672 conditions per place. [2024-02-02 09:15:06,749 INFO L140 encePairwiseOnDemand]: 63/72 looper letters, 80 selfloop transitions, 18 changer transitions 0/109 dead transitions. [2024-02-02 09:15:06,749 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 109 transitions, 698 flow [2024-02-02 09:15:06,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-02 09:15:06,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-02 09:15:06,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 194 transitions. [2024-02-02 09:15:06,750 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44907407407407407 [2024-02-02 09:15:06,750 INFO L175 Difference]: Start difference. First operand has 88 places, 76 transitions, 401 flow. Second operand 6 states and 194 transitions. [2024-02-02 09:15:06,751 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 109 transitions, 698 flow [2024-02-02 09:15:06,754 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 109 transitions, 694 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-02-02 09:15:06,755 INFO L231 Difference]: Finished difference. Result has 95 places, 78 transitions, 462 flow [2024-02-02 09:15:06,755 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=397, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=462, PETRI_PLACES=95, PETRI_TRANSITIONS=78} [2024-02-02 09:15:06,755 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 19 predicate places. [2024-02-02 09:15:06,755 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 78 transitions, 462 flow [2024-02-02 09:15:06,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.714285714285715) internal successors, (138), 7 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:06,756 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:15:06,756 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:15:06,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-02-02 09:15:06,756 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 58 more)] === [2024-02-02 09:15:06,757 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:15:06,757 INFO L85 PathProgramCache]: Analyzing trace with hash -903452638, now seen corresponding path program 1 times [2024-02-02 09:15:06,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:15:06,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833291225] [2024-02-02 09:15:06,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:15:06,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:15:06,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:15:06,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:15:06,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:15:06,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833291225] [2024-02-02 09:15:06,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833291225] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:15:06,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:15:06,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-02 09:15:06,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937441399] [2024-02-02 09:15:06,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:15:06,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-02-02 09:15:06,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:15:06,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-02-02 09:15:06,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-02-02 09:15:06,892 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 72 [2024-02-02 09:15:06,892 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 78 transitions, 462 flow. Second operand has 6 states, 6 states have (on average 29.5) internal successors, (177), 6 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:06,892 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:15:06,893 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 72 [2024-02-02 09:15:06,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:15:07,238 INFO L124 PetriNetUnfolderBase]: 1491/2828 cut-off events. [2024-02-02 09:15:07,238 INFO L125 PetriNetUnfolderBase]: For 4119/4132 co-relation queries the response was YES. [2024-02-02 09:15:07,245 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7923 conditions, 2828 events. 1491/2828 cut-off events. For 4119/4132 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 19237 event pairs, 725 based on Foata normal form. 17/2528 useless extension candidates. Maximal degree in co-relation 7887. Up to 2015 conditions per place. [2024-02-02 09:15:07,252 INFO L140 encePairwiseOnDemand]: 65/72 looper letters, 71 selfloop transitions, 17 changer transitions 0/107 dead transitions. [2024-02-02 09:15:07,252 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 107 transitions, 748 flow [2024-02-02 09:15:07,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-02 09:15:07,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-02 09:15:07,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 214 transitions. [2024-02-02 09:15:07,253 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5944444444444444 [2024-02-02 09:15:07,254 INFO L175 Difference]: Start difference. First operand has 95 places, 78 transitions, 462 flow. Second operand 5 states and 214 transitions. [2024-02-02 09:15:07,254 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 107 transitions, 748 flow [2024-02-02 09:15:07,257 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 107 transitions, 712 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-02-02 09:15:07,258 INFO L231 Difference]: Finished difference. Result has 96 places, 80 transitions, 484 flow [2024-02-02 09:15:07,258 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=430, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=484, PETRI_PLACES=96, PETRI_TRANSITIONS=80} [2024-02-02 09:15:07,259 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 20 predicate places. [2024-02-02 09:15:07,259 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 80 transitions, 484 flow [2024-02-02 09:15:07,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 29.5) internal successors, (177), 6 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:07,259 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:15:07,259 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:15:07,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-02-02 09:15:07,260 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 58 more)] === [2024-02-02 09:15:07,260 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:15:07,260 INFO L85 PathProgramCache]: Analyzing trace with hash -784082566, now seen corresponding path program 2 times [2024-02-02 09:15:07,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:15:07,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009319179] [2024-02-02 09:15:07,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:15:07,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:15:07,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:15:07,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:15:07,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:15:07,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009319179] [2024-02-02 09:15:07,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009319179] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:15:07,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:15:07,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-02 09:15:07,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072886165] [2024-02-02 09:15:07,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:15:07,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-02-02 09:15:07,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:15:07,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-02-02 09:15:07,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-02-02 09:15:07,386 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 72 [2024-02-02 09:15:07,386 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 80 transitions, 484 flow. Second operand has 6 states, 6 states have (on average 29.5) internal successors, (177), 6 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:07,386 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:15:07,386 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 72 [2024-02-02 09:15:07,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:15:07,804 INFO L124 PetriNetUnfolderBase]: 1437/2733 cut-off events. [2024-02-02 09:15:07,804 INFO L125 PetriNetUnfolderBase]: For 4356/4373 co-relation queries the response was YES. [2024-02-02 09:15:07,811 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7636 conditions, 2733 events. 1437/2733 cut-off events. For 4356/4373 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 18411 event pairs, 687 based on Foata normal form. 35/2455 useless extension candidates. Maximal degree in co-relation 7599. Up to 1999 conditions per place. [2024-02-02 09:15:07,817 INFO L140 encePairwiseOnDemand]: 65/72 looper letters, 67 selfloop transitions, 16 changer transitions 0/102 dead transitions. [2024-02-02 09:15:07,818 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 102 transitions, 718 flow [2024-02-02 09:15:07,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-02 09:15:07,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-02 09:15:07,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 208 transitions. [2024-02-02 09:15:07,819 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5777777777777777 [2024-02-02 09:15:07,819 INFO L175 Difference]: Start difference. First operand has 96 places, 80 transitions, 484 flow. Second operand 5 states and 208 transitions. [2024-02-02 09:15:07,819 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 102 transitions, 718 flow [2024-02-02 09:15:07,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 102 transitions, 696 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-02-02 09:15:07,824 INFO L231 Difference]: Finished difference. Result has 99 places, 80 transitions, 502 flow [2024-02-02 09:15:07,825 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=462, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=502, PETRI_PLACES=99, PETRI_TRANSITIONS=80} [2024-02-02 09:15:07,825 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 23 predicate places. [2024-02-02 09:15:07,825 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 80 transitions, 502 flow [2024-02-02 09:15:07,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 29.5) internal successors, (177), 6 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:07,826 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:15:07,826 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:15:07,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-02-02 09:15:07,826 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 58 more)] === [2024-02-02 09:15:07,826 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:15:07,826 INFO L85 PathProgramCache]: Analyzing trace with hash -831356261, now seen corresponding path program 1 times [2024-02-02 09:15:07,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:15:07,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226928724] [2024-02-02 09:15:07,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:15:07,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:15:07,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:15:07,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:15:07,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:15:07,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226928724] [2024-02-02 09:15:07,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226928724] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:15:07,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:15:07,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-02 09:15:07,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930173] [2024-02-02 09:15:07,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:15:07,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-02 09:15:07,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:15:07,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-02 09:15:07,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-02-02 09:15:08,032 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 72 [2024-02-02 09:15:08,033 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 80 transitions, 502 flow. Second operand has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 7 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:08,033 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:15:08,033 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 72 [2024-02-02 09:15:08,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:15:08,464 INFO L124 PetriNetUnfolderBase]: 2029/3600 cut-off events. [2024-02-02 09:15:08,465 INFO L125 PetriNetUnfolderBase]: For 5907/5949 co-relation queries the response was YES. [2024-02-02 09:15:08,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10257 conditions, 3600 events. 2029/3600 cut-off events. For 5907/5949 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 23290 event pairs, 924 based on Foata normal form. 31/3269 useless extension candidates. Maximal degree in co-relation 10219. Up to 2735 conditions per place. [2024-02-02 09:15:08,486 INFO L140 encePairwiseOnDemand]: 63/72 looper letters, 86 selfloop transitions, 21 changer transitions 0/118 dead transitions. [2024-02-02 09:15:08,486 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 118 transitions, 829 flow [2024-02-02 09:15:08,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-02 09:15:08,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-02 09:15:08,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 190 transitions. [2024-02-02 09:15:08,487 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4398148148148148 [2024-02-02 09:15:08,487 INFO L175 Difference]: Start difference. First operand has 99 places, 80 transitions, 502 flow. Second operand 6 states and 190 transitions. [2024-02-02 09:15:08,487 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 118 transitions, 829 flow [2024-02-02 09:15:08,494 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 118 transitions, 788 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-02-02 09:15:08,496 INFO L231 Difference]: Finished difference. Result has 102 places, 82 transitions, 530 flow [2024-02-02 09:15:08,496 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=463, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=530, PETRI_PLACES=102, PETRI_TRANSITIONS=82} [2024-02-02 09:15:08,497 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 26 predicate places. [2024-02-02 09:15:08,497 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 82 transitions, 530 flow [2024-02-02 09:15:08,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 7 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:08,497 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:15:08,497 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:15:08,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-02-02 09:15:08,497 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 58 more)] === [2024-02-02 09:15:08,498 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:15:08,498 INFO L85 PathProgramCache]: Analyzing trace with hash 1876814577, now seen corresponding path program 1 times [2024-02-02 09:15:08,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:15:08,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508450172] [2024-02-02 09:15:08,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:15:08,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:15:08,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:15:08,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:15:08,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:15:08,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508450172] [2024-02-02 09:15:08,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508450172] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:15:08,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:15:08,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-02 09:15:08,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678659407] [2024-02-02 09:15:08,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:15:08,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-02 09:15:08,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:15:08,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-02 09:15:08,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-02-02 09:15:08,690 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 72 [2024-02-02 09:15:08,691 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 82 transitions, 530 flow. Second operand has 7 states, 7 states have (on average 19.571428571428573) internal successors, (137), 7 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:08,691 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:15:08,691 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 72 [2024-02-02 09:15:08,691 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:15:09,256 INFO L124 PetriNetUnfolderBase]: 2126/3804 cut-off events. [2024-02-02 09:15:09,257 INFO L125 PetriNetUnfolderBase]: For 6137/6148 co-relation queries the response was YES. [2024-02-02 09:15:09,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10951 conditions, 3804 events. 2126/3804 cut-off events. For 6137/6148 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 25013 event pairs, 984 based on Foata normal form. 14/3434 useless extension candidates. Maximal degree in co-relation 10911. Up to 2690 conditions per place. [2024-02-02 09:15:09,286 INFO L140 encePairwiseOnDemand]: 60/72 looper letters, 89 selfloop transitions, 27 changer transitions 0/128 dead transitions. [2024-02-02 09:15:09,287 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 128 transitions, 931 flow [2024-02-02 09:15:09,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-02 09:15:09,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-02 09:15:09,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 208 transitions. [2024-02-02 09:15:09,288 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48148148148148145 [2024-02-02 09:15:09,288 INFO L175 Difference]: Start difference. First operand has 102 places, 82 transitions, 530 flow. Second operand 6 states and 208 transitions. [2024-02-02 09:15:09,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 128 transitions, 931 flow [2024-02-02 09:15:09,300 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 128 transitions, 897 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-02-02 09:15:09,302 INFO L231 Difference]: Finished difference. Result has 106 places, 90 transitions, 625 flow [2024-02-02 09:15:09,302 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=503, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=625, PETRI_PLACES=106, PETRI_TRANSITIONS=90} [2024-02-02 09:15:09,303 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 30 predicate places. [2024-02-02 09:15:09,303 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 90 transitions, 625 flow [2024-02-02 09:15:09,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.571428571428573) internal successors, (137), 7 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:09,303 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:15:09,303 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:15:09,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-02-02 09:15:09,304 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 58 more)] === [2024-02-02 09:15:09,304 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:15:09,304 INFO L85 PathProgramCache]: Analyzing trace with hash 1602499139, now seen corresponding path program 2 times [2024-02-02 09:15:09,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:15:09,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026828240] [2024-02-02 09:15:09,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:15:09,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:15:09,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:15:09,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:15:09,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:15:09,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026828240] [2024-02-02 09:15:09,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026828240] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:15:09,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:15:09,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-02 09:15:09,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633809369] [2024-02-02 09:15:09,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:15:09,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-02 09:15:09,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:15:09,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-02 09:15:09,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-02-02 09:15:09,507 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 72 [2024-02-02 09:15:09,508 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 90 transitions, 625 flow. Second operand has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 7 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:09,508 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:15:09,508 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 72 [2024-02-02 09:15:09,508 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:15:10,214 INFO L124 PetriNetUnfolderBase]: 3300/5603 cut-off events. [2024-02-02 09:15:10,214 INFO L125 PetriNetUnfolderBase]: For 10786/10968 co-relation queries the response was YES. [2024-02-02 09:15:10,262 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17162 conditions, 5603 events. 3300/5603 cut-off events. For 10786/10968 co-relation queries the response was YES. Maximal size of possible extension queue 234. Compared 35721 event pairs, 1333 based on Foata normal form. 130/5242 useless extension candidates. Maximal degree in co-relation 17119. Up to 3875 conditions per place. [2024-02-02 09:15:10,280 INFO L140 encePairwiseOnDemand]: 63/72 looper letters, 96 selfloop transitions, 28 changer transitions 0/138 dead transitions. [2024-02-02 09:15:10,280 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 138 transitions, 1105 flow [2024-02-02 09:15:10,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-02 09:15:10,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-02 09:15:10,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 193 transitions. [2024-02-02 09:15:10,282 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44675925925925924 [2024-02-02 09:15:10,282 INFO L175 Difference]: Start difference. First operand has 106 places, 90 transitions, 625 flow. Second operand 6 states and 193 transitions. [2024-02-02 09:15:10,282 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 138 transitions, 1105 flow [2024-02-02 09:15:10,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 138 transitions, 1043 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-02-02 09:15:10,295 INFO L231 Difference]: Finished difference. Result has 109 places, 99 transitions, 741 flow [2024-02-02 09:15:10,296 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=581, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=741, PETRI_PLACES=109, PETRI_TRANSITIONS=99} [2024-02-02 09:15:10,296 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 33 predicate places. [2024-02-02 09:15:10,296 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 99 transitions, 741 flow [2024-02-02 09:15:10,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 7 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:10,297 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:15:10,297 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:15:10,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-02-02 09:15:10,297 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 58 more)] === [2024-02-02 09:15:10,297 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:15:10,297 INFO L85 PathProgramCache]: Analyzing trace with hash -1956504459, now seen corresponding path program 2 times [2024-02-02 09:15:10,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:15:10,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480665572] [2024-02-02 09:15:10,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:15:10,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:15:10,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:15:10,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:15:10,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:15:10,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480665572] [2024-02-02 09:15:10,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480665572] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:15:10,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:15:10,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-02 09:15:10,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560548848] [2024-02-02 09:15:10,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:15:10,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-02 09:15:10,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:15:10,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-02 09:15:10,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-02-02 09:15:10,505 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 72 [2024-02-02 09:15:10,505 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 99 transitions, 741 flow. Second operand has 7 states, 7 states have (on average 19.571428571428573) internal successors, (137), 7 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:10,505 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:15:10,505 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 72 [2024-02-02 09:15:10,506 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:15:11,142 INFO L124 PetriNetUnfolderBase]: 2226/3992 cut-off events. [2024-02-02 09:15:11,142 INFO L125 PetriNetUnfolderBase]: For 8020/8037 co-relation queries the response was YES. [2024-02-02 09:15:11,158 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12606 conditions, 3992 events. 2226/3992 cut-off events. For 8020/8037 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 26405 event pairs, 984 based on Foata normal form. 116/3722 useless extension candidates. Maximal degree in co-relation 12561. Up to 2744 conditions per place. [2024-02-02 09:15:11,171 INFO L140 encePairwiseOnDemand]: 62/72 looper letters, 81 selfloop transitions, 32 changer transitions 0/125 dead transitions. [2024-02-02 09:15:11,171 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 125 transitions, 1064 flow [2024-02-02 09:15:11,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-02 09:15:11,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-02 09:15:11,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 192 transitions. [2024-02-02 09:15:11,173 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-02-02 09:15:11,173 INFO L175 Difference]: Start difference. First operand has 109 places, 99 transitions, 741 flow. Second operand 6 states and 192 transitions. [2024-02-02 09:15:11,173 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 125 transitions, 1064 flow [2024-02-02 09:15:11,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 125 transitions, 1041 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-02 09:15:11,188 INFO L231 Difference]: Finished difference. Result has 113 places, 99 transitions, 804 flow [2024-02-02 09:15:11,189 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=718, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=804, PETRI_PLACES=113, PETRI_TRANSITIONS=99} [2024-02-02 09:15:11,189 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 37 predicate places. [2024-02-02 09:15:11,189 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 99 transitions, 804 flow [2024-02-02 09:15:11,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.571428571428573) internal successors, (137), 7 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:11,190 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:15:11,190 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:15:11,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-02-02 09:15:11,190 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 58 more)] === [2024-02-02 09:15:11,190 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:15:11,191 INFO L85 PathProgramCache]: Analyzing trace with hash -783999907, now seen corresponding path program 1 times [2024-02-02 09:15:11,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:15:11,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142453989] [2024-02-02 09:15:11,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:15:11,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:15:11,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:15:11,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:15:11,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:15:11,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142453989] [2024-02-02 09:15:11,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142453989] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:15:11,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:15:11,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-02 09:15:11,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143521066] [2024-02-02 09:15:11,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:15:11,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-02 09:15:11,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:15:11,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-02 09:15:11,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-02-02 09:15:11,420 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 72 [2024-02-02 09:15:11,421 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 99 transitions, 804 flow. Second operand has 7 states, 7 states have (on average 17.428571428571427) internal successors, (122), 7 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:11,421 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:15:11,421 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 72 [2024-02-02 09:15:11,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:15:12,074 INFO L124 PetriNetUnfolderBase]: 2970/5069 cut-off events. [2024-02-02 09:15:12,075 INFO L125 PetriNetUnfolderBase]: For 13462/13631 co-relation queries the response was YES. [2024-02-02 09:15:12,096 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16584 conditions, 5069 events. 2970/5069 cut-off events. For 13462/13631 co-relation queries the response was YES. Maximal size of possible extension queue 234. Compared 31925 event pairs, 1237 based on Foata normal form. 67/4654 useless extension candidates. Maximal degree in co-relation 16538. Up to 3830 conditions per place. [2024-02-02 09:15:12,112 INFO L140 encePairwiseOnDemand]: 62/72 looper letters, 86 selfloop transitions, 29 changer transitions 0/129 dead transitions. [2024-02-02 09:15:12,113 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 129 transitions, 1128 flow [2024-02-02 09:15:12,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-02 09:15:12,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-02 09:15:12,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 185 transitions. [2024-02-02 09:15:12,114 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42824074074074076 [2024-02-02 09:15:12,114 INFO L175 Difference]: Start difference. First operand has 113 places, 99 transitions, 804 flow. Second operand 6 states and 185 transitions. [2024-02-02 09:15:12,115 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 129 transitions, 1128 flow [2024-02-02 09:15:12,129 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 129 transitions, 1064 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-02-02 09:15:12,131 INFO L231 Difference]: Finished difference. Result has 114 places, 99 transitions, 811 flow [2024-02-02 09:15:12,132 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=740, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=811, PETRI_PLACES=114, PETRI_TRANSITIONS=99} [2024-02-02 09:15:12,132 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 38 predicate places. [2024-02-02 09:15:12,132 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 99 transitions, 811 flow [2024-02-02 09:15:12,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.428571428571427) internal successors, (122), 7 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:12,133 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:15:12,133 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:15:12,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-02-02 09:15:12,133 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 58 more)] === [2024-02-02 09:15:12,134 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:15:12,134 INFO L85 PathProgramCache]: Analyzing trace with hash -1930613161, now seen corresponding path program 3 times [2024-02-02 09:15:12,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:15:12,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380741195] [2024-02-02 09:15:12,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:15:12,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:15:12,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:15:12,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:15:12,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:15:12,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380741195] [2024-02-02 09:15:12,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380741195] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:15:12,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:15:12,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-02 09:15:12,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058360560] [2024-02-02 09:15:12,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:15:12,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-02 09:15:12,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:15:12,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-02 09:15:12,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-02-02 09:15:12,353 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 72 [2024-02-02 09:15:12,353 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 99 transitions, 811 flow. Second operand has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 7 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:12,354 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:15:12,354 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 72 [2024-02-02 09:15:12,354 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:15:13,094 INFO L124 PetriNetUnfolderBase]: 2973/5056 cut-off events. [2024-02-02 09:15:13,095 INFO L125 PetriNetUnfolderBase]: For 14293/14463 co-relation queries the response was YES. [2024-02-02 09:15:13,110 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16617 conditions, 5056 events. 2973/5056 cut-off events. For 14293/14463 co-relation queries the response was YES. Maximal size of possible extension queue 235. Compared 31639 event pairs, 1220 based on Foata normal form. 89/4669 useless extension candidates. Maximal degree in co-relation 16570. Up to 3851 conditions per place. [2024-02-02 09:15:13,125 INFO L140 encePairwiseOnDemand]: 60/72 looper letters, 81 selfloop transitions, 38 changer transitions 0/133 dead transitions. [2024-02-02 09:15:13,125 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 133 transitions, 1193 flow [2024-02-02 09:15:13,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-02 09:15:13,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-02 09:15:13,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 185 transitions. [2024-02-02 09:15:13,126 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42824074074074076 [2024-02-02 09:15:13,126 INFO L175 Difference]: Start difference. First operand has 114 places, 99 transitions, 811 flow. Second operand 6 states and 185 transitions. [2024-02-02 09:15:13,127 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 133 transitions, 1193 flow [2024-02-02 09:15:13,147 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 133 transitions, 1124 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-02-02 09:15:13,151 INFO L231 Difference]: Finished difference. Result has 116 places, 105 transitions, 902 flow [2024-02-02 09:15:13,151 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=750, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=902, PETRI_PLACES=116, PETRI_TRANSITIONS=105} [2024-02-02 09:15:13,151 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 40 predicate places. [2024-02-02 09:15:13,152 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 105 transitions, 902 flow [2024-02-02 09:15:13,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 7 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:13,153 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:15:13,153 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:15:13,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-02-02 09:15:13,154 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 58 more)] === [2024-02-02 09:15:13,154 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:15:13,154 INFO L85 PathProgramCache]: Analyzing trace with hash -1929691629, now seen corresponding path program 2 times [2024-02-02 09:15:13,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:15:13,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021462078] [2024-02-02 09:15:13,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:15:13,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:15:13,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:15:13,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:15:13,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:15:13,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021462078] [2024-02-02 09:15:13,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021462078] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:15:13,388 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:15:13,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-02 09:15:13,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678434852] [2024-02-02 09:15:13,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:15:13,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-02 09:15:13,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:15:13,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-02 09:15:13,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-02-02 09:15:13,435 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 72 [2024-02-02 09:15:13,436 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 105 transitions, 902 flow. Second operand has 7 states, 7 states have (on average 17.428571428571427) internal successors, (122), 7 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:13,436 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:15:13,436 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 72 [2024-02-02 09:15:13,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:15:14,106 INFO L124 PetriNetUnfolderBase]: 2999/5124 cut-off events. [2024-02-02 09:15:14,106 INFO L125 PetriNetUnfolderBase]: For 15325/15509 co-relation queries the response was YES. [2024-02-02 09:15:14,128 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17472 conditions, 5124 events. 2999/5124 cut-off events. For 15325/15509 co-relation queries the response was YES. Maximal size of possible extension queue 235. Compared 32259 event pairs, 1205 based on Foata normal form. 86/4737 useless extension candidates. Maximal degree in co-relation 17423. Up to 3863 conditions per place. [2024-02-02 09:15:14,143 INFO L140 encePairwiseOnDemand]: 59/72 looper letters, 79 selfloop transitions, 42 changer transitions 0/135 dead transitions. [2024-02-02 09:15:14,143 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 135 transitions, 1294 flow [2024-02-02 09:15:14,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-02 09:15:14,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-02 09:15:14,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 184 transitions. [2024-02-02 09:15:14,145 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42592592592592593 [2024-02-02 09:15:14,145 INFO L175 Difference]: Start difference. First operand has 116 places, 105 transitions, 902 flow. Second operand 6 states and 184 transitions. [2024-02-02 09:15:14,145 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 135 transitions, 1294 flow [2024-02-02 09:15:14,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 135 transitions, 1241 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-02-02 09:15:14,168 INFO L231 Difference]: Finished difference. Result has 120 places, 110 transitions, 1044 flow [2024-02-02 09:15:14,168 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=853, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1044, PETRI_PLACES=120, PETRI_TRANSITIONS=110} [2024-02-02 09:15:14,168 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 44 predicate places. [2024-02-02 09:15:14,168 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 110 transitions, 1044 flow [2024-02-02 09:15:14,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.428571428571427) internal successors, (122), 7 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:14,169 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:15:14,169 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:15:14,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-02-02 09:15:14,169 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 58 more)] === [2024-02-02 09:15:14,169 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:15:14,170 INFO L85 PathProgramCache]: Analyzing trace with hash -1929660009, now seen corresponding path program 3 times [2024-02-02 09:15:14,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:15:14,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401550895] [2024-02-02 09:15:14,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:15:14,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:15:14,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:15:14,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:15:14,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:15:14,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401550895] [2024-02-02 09:15:14,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401550895] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:15:14,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:15:14,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-02 09:15:14,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798566462] [2024-02-02 09:15:14,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:15:14,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-02 09:15:14,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:15:14,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-02 09:15:14,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-02-02 09:15:14,343 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 72 [2024-02-02 09:15:14,343 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 110 transitions, 1044 flow. Second operand has 7 states, 7 states have (on average 17.428571428571427) internal successors, (122), 7 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:14,343 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:15:14,343 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 72 [2024-02-02 09:15:14,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:15:15,040 INFO L124 PetriNetUnfolderBase]: 3061/5216 cut-off events. [2024-02-02 09:15:15,041 INFO L125 PetriNetUnfolderBase]: For 17325/17518 co-relation queries the response was YES. [2024-02-02 09:15:15,069 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18328 conditions, 5216 events. 3061/5216 cut-off events. For 17325/17518 co-relation queries the response was YES. Maximal size of possible extension queue 235. Compared 32856 event pairs, 1205 based on Foata normal form. 68/4808 useless extension candidates. Maximal degree in co-relation 18277. Up to 3902 conditions per place. [2024-02-02 09:15:15,090 INFO L140 encePairwiseOnDemand]: 61/72 looper letters, 79 selfloop transitions, 51 changer transitions 0/144 dead transitions. [2024-02-02 09:15:15,090 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 144 transitions, 1467 flow [2024-02-02 09:15:15,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-02 09:15:15,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-02 09:15:15,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 181 transitions. [2024-02-02 09:15:15,092 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41898148148148145 [2024-02-02 09:15:15,092 INFO L175 Difference]: Start difference. First operand has 120 places, 110 transitions, 1044 flow. Second operand 6 states and 181 transitions. [2024-02-02 09:15:15,092 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 144 transitions, 1467 flow [2024-02-02 09:15:15,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 144 transitions, 1413 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-02-02 09:15:15,122 INFO L231 Difference]: Finished difference. Result has 124 places, 120 transitions, 1234 flow [2024-02-02 09:15:15,122 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=997, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1234, PETRI_PLACES=124, PETRI_TRANSITIONS=120} [2024-02-02 09:15:15,123 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 48 predicate places. [2024-02-02 09:15:15,123 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 120 transitions, 1234 flow [2024-02-02 09:15:15,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.428571428571427) internal successors, (122), 7 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:15,123 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:15:15,123 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:15:15,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-02-02 09:15:15,124 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 58 more)] === [2024-02-02 09:15:15,124 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:15:15,124 INFO L85 PathProgramCache]: Analyzing trace with hash -881560428, now seen corresponding path program 1 times [2024-02-02 09:15:15,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:15:15,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657725109] [2024-02-02 09:15:15,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:15:15,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:15:15,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:15:15,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:15:15,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:15:15,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657725109] [2024-02-02 09:15:15,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657725109] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:15:15,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:15:15,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-02 09:15:15,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472586785] [2024-02-02 09:15:15,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:15:15,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-02 09:15:15,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:15:15,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-02 09:15:15,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-02-02 09:15:15,434 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 72 [2024-02-02 09:15:15,434 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 120 transitions, 1234 flow. Second operand has 8 states, 8 states have (on average 19.625) internal successors, (157), 8 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:15,434 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:15:15,434 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 72 [2024-02-02 09:15:15,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:15:15,949 INFO L124 PetriNetUnfolderBase]: 1935/3570 cut-off events. [2024-02-02 09:15:15,949 INFO L125 PetriNetUnfolderBase]: For 16973/17166 co-relation queries the response was YES. [2024-02-02 09:15:15,964 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13944 conditions, 3570 events. 1935/3570 cut-off events. For 16973/17166 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 22663 event pairs, 626 based on Foata normal form. 176/3463 useless extension candidates. Maximal degree in co-relation 13891. Up to 1533 conditions per place. [2024-02-02 09:15:15,976 INFO L140 encePairwiseOnDemand]: 59/72 looper letters, 104 selfloop transitions, 43 changer transitions 0/165 dead transitions. [2024-02-02 09:15:15,976 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 165 transitions, 1707 flow [2024-02-02 09:15:15,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-02 09:15:15,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-02 09:15:15,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 232 transitions. [2024-02-02 09:15:15,977 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4603174603174603 [2024-02-02 09:15:15,977 INFO L175 Difference]: Start difference. First operand has 124 places, 120 transitions, 1234 flow. Second operand 7 states and 232 transitions. [2024-02-02 09:15:15,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 165 transitions, 1707 flow [2024-02-02 09:15:16,008 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 165 transitions, 1584 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-02-02 09:15:16,010 INFO L231 Difference]: Finished difference. Result has 126 places, 125 transitions, 1270 flow [2024-02-02 09:15:16,010 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=1111, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1270, PETRI_PLACES=126, PETRI_TRANSITIONS=125} [2024-02-02 09:15:16,010 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 50 predicate places. [2024-02-02 09:15:16,010 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 125 transitions, 1270 flow [2024-02-02 09:15:16,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.625) internal successors, (157), 8 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:16,011 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:15:16,011 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:15:16,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-02-02 09:15:16,011 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 58 more)] === [2024-02-02 09:15:16,011 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:15:16,012 INFO L85 PathProgramCache]: Analyzing trace with hash 509220809, now seen corresponding path program 1 times [2024-02-02 09:15:16,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:15:16,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179137602] [2024-02-02 09:15:16,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:15:16,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:15:16,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:15:16,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:15:16,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:15:16,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179137602] [2024-02-02 09:15:16,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179137602] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:15:16,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:15:16,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-02 09:15:16,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970534252] [2024-02-02 09:15:16,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:15:16,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-02 09:15:16,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:15:16,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-02 09:15:16,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-02-02 09:15:16,180 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 72 [2024-02-02 09:15:16,181 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 125 transitions, 1270 flow. Second operand has 7 states, 7 states have (on average 29.571428571428573) internal successors, (207), 7 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:16,181 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:15:16,181 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 72 [2024-02-02 09:15:16,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:15:16,639 INFO L124 PetriNetUnfolderBase]: 1561/3026 cut-off events. [2024-02-02 09:15:16,639 INFO L125 PetriNetUnfolderBase]: For 17147/17314 co-relation queries the response was YES. [2024-02-02 09:15:16,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12413 conditions, 3026 events. 1561/3026 cut-off events. For 17147/17314 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 20052 event pairs, 409 based on Foata normal form. 62/2916 useless extension candidates. Maximal degree in co-relation 12359. Up to 1559 conditions per place. [2024-02-02 09:15:16,661 INFO L140 encePairwiseOnDemand]: 64/72 looper letters, 120 selfloop transitions, 63 changer transitions 0/212 dead transitions. [2024-02-02 09:15:16,661 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 212 transitions, 2602 flow [2024-02-02 09:15:16,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-02 09:15:16,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-02 09:15:16,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 280 transitions. [2024-02-02 09:15:16,662 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556 [2024-02-02 09:15:16,662 INFO L175 Difference]: Start difference. First operand has 126 places, 125 transitions, 1270 flow. Second operand 7 states and 280 transitions. [2024-02-02 09:15:16,662 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 212 transitions, 2602 flow [2024-02-02 09:15:16,710 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 212 transitions, 2542 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-02-02 09:15:16,729 INFO L231 Difference]: Finished difference. Result has 133 places, 171 transitions, 2114 flow [2024-02-02 09:15:16,729 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=1231, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2114, PETRI_PLACES=133, PETRI_TRANSITIONS=171} [2024-02-02 09:15:16,730 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 57 predicate places. [2024-02-02 09:15:16,730 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 171 transitions, 2114 flow [2024-02-02 09:15:16,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 29.571428571428573) internal successors, (207), 7 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:16,730 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:15:16,730 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:15:16,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-02-02 09:15:16,730 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 58 more)] === [2024-02-02 09:15:16,731 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:15:16,731 INFO L85 PathProgramCache]: Analyzing trace with hash -974211615, now seen corresponding path program 1 times [2024-02-02 09:15:16,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:15:16,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853586840] [2024-02-02 09:15:16,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:15:16,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:15:16,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:15:16,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:15:16,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:15:16,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853586840] [2024-02-02 09:15:16,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853586840] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:15:16,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:15:16,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-02 09:15:16,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382784105] [2024-02-02 09:15:16,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:15:16,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-02 09:15:16,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:15:16,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-02 09:15:16,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-02-02 09:15:16,901 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 72 [2024-02-02 09:15:16,901 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 171 transitions, 2114 flow. Second operand has 7 states, 7 states have (on average 29.571428571428573) internal successors, (207), 7 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:16,902 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:15:16,902 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 72 [2024-02-02 09:15:16,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:15:17,392 INFO L124 PetriNetUnfolderBase]: 1566/3029 cut-off events. [2024-02-02 09:15:17,392 INFO L125 PetriNetUnfolderBase]: For 20537/20714 co-relation queries the response was YES. [2024-02-02 09:15:17,403 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13308 conditions, 3029 events. 1566/3029 cut-off events. For 20537/20714 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 19861 event pairs, 505 based on Foata normal form. 67/2889 useless extension candidates. Maximal degree in co-relation 13249. Up to 1548 conditions per place. [2024-02-02 09:15:17,411 INFO L140 encePairwiseOnDemand]: 65/72 looper letters, 117 selfloop transitions, 59 changer transitions 0/205 dead transitions. [2024-02-02 09:15:17,411 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 205 transitions, 2631 flow [2024-02-02 09:15:17,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-02 09:15:17,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-02 09:15:17,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 218 transitions. [2024-02-02 09:15:17,412 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6055555555555555 [2024-02-02 09:15:17,412 INFO L175 Difference]: Start difference. First operand has 133 places, 171 transitions, 2114 flow. Second operand 5 states and 218 transitions. [2024-02-02 09:15:17,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 205 transitions, 2631 flow [2024-02-02 09:15:17,438 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 205 transitions, 2623 flow, removed 4 selfloop flow, removed 0 redundant places. [2024-02-02 09:15:17,441 INFO L231 Difference]: Finished difference. Result has 138 places, 173 transitions, 2255 flow [2024-02-02 09:15:17,441 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=2106, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2255, PETRI_PLACES=138, PETRI_TRANSITIONS=173} [2024-02-02 09:15:17,441 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 62 predicate places. [2024-02-02 09:15:17,441 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 173 transitions, 2255 flow [2024-02-02 09:15:17,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 29.571428571428573) internal successors, (207), 7 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:17,442 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:15:17,442 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:15:17,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-02-02 09:15:17,442 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 58 more)] === [2024-02-02 09:15:17,442 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:15:17,442 INFO L85 PathProgramCache]: Analyzing trace with hash -825155266, now seen corresponding path program 2 times [2024-02-02 09:15:17,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:15:17,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513402731] [2024-02-02 09:15:17,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:15:17,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:15:17,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:15:17,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:15:17,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:15:17,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513402731] [2024-02-02 09:15:17,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513402731] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:15:17,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:15:17,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-02 09:15:17,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905149215] [2024-02-02 09:15:17,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:15:17,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-02 09:15:17,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:15:17,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-02 09:15:17,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-02-02 09:15:17,688 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 72 [2024-02-02 09:15:17,689 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 173 transitions, 2255 flow. Second operand has 8 states, 8 states have (on average 19.625) internal successors, (157), 8 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:17,689 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:15:17,689 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 72 [2024-02-02 09:15:17,689 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:15:18,250 INFO L124 PetriNetUnfolderBase]: 2060/3798 cut-off events. [2024-02-02 09:15:18,251 INFO L125 PetriNetUnfolderBase]: For 23462/23657 co-relation queries the response was YES. [2024-02-02 09:15:18,269 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16788 conditions, 3798 events. 2060/3798 cut-off events. For 23462/23657 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 24352 event pairs, 658 based on Foata normal form. 74/3666 useless extension candidates. Maximal degree in co-relation 16726. Up to 1590 conditions per place. [2024-02-02 09:15:18,282 INFO L140 encePairwiseOnDemand]: 59/72 looper letters, 139 selfloop transitions, 78 changer transitions 0/235 dead transitions. [2024-02-02 09:15:18,282 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 235 transitions, 2980 flow [2024-02-02 09:15:18,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-02 09:15:18,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-02 09:15:18,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 241 transitions. [2024-02-02 09:15:18,283 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4781746031746032 [2024-02-02 09:15:18,283 INFO L175 Difference]: Start difference. First operand has 138 places, 173 transitions, 2255 flow. Second operand 7 states and 241 transitions. [2024-02-02 09:15:18,283 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 235 transitions, 2980 flow [2024-02-02 09:15:18,327 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 235 transitions, 2891 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-02-02 09:15:18,330 INFO L231 Difference]: Finished difference. Result has 143 places, 182 transitions, 2435 flow [2024-02-02 09:15:18,330 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=2176, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2435, PETRI_PLACES=143, PETRI_TRANSITIONS=182} [2024-02-02 09:15:18,331 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 67 predicate places. [2024-02-02 09:15:18,331 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 182 transitions, 2435 flow [2024-02-02 09:15:18,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.625) internal successors, (157), 8 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:18,331 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:15:18,331 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:15:18,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-02-02 09:15:18,332 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting P0Err9ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 58 more)] === [2024-02-02 09:15:18,332 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:15:18,332 INFO L85 PathProgramCache]: Analyzing trace with hash -1429691802, now seen corresponding path program 1 times [2024-02-02 09:15:18,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:15:18,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542760684] [2024-02-02 09:15:18,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:15:18,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:15:18,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:15:18,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:15:18,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:15:18,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542760684] [2024-02-02 09:15:18,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542760684] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:15:18,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:15:18,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-02 09:15:18,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381307461] [2024-02-02 09:15:18,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:15:18,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-02 09:15:18,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:15:18,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-02 09:15:18,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-02-02 09:15:18,560 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 72 [2024-02-02 09:15:18,561 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 182 transitions, 2435 flow. Second operand has 8 states, 8 states have (on average 17.875) internal successors, (143), 8 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:18,561 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:15:18,561 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 72 [2024-02-02 09:15:18,561 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:15:19,174 INFO L124 PetriNetUnfolderBase]: 2244/4028 cut-off events. [2024-02-02 09:15:19,174 INFO L125 PetriNetUnfolderBase]: For 26712/27000 co-relation queries the response was YES. [2024-02-02 09:15:19,193 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18466 conditions, 4028 events. 2244/4028 cut-off events. For 26712/27000 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 24993 event pairs, 544 based on Foata normal form. 84/3898 useless extension candidates. Maximal degree in co-relation 18402. Up to 1945 conditions per place. [2024-02-02 09:15:19,205 INFO L140 encePairwiseOnDemand]: 62/72 looper letters, 149 selfloop transitions, 71 changer transitions 0/237 dead transitions. [2024-02-02 09:15:19,205 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 237 transitions, 3111 flow [2024-02-02 09:15:19,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-02 09:15:19,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-02 09:15:19,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 226 transitions. [2024-02-02 09:15:19,210 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44841269841269843 [2024-02-02 09:15:19,210 INFO L175 Difference]: Start difference. First operand has 143 places, 182 transitions, 2435 flow. Second operand 7 states and 226 transitions. [2024-02-02 09:15:19,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 237 transitions, 3111 flow [2024-02-02 09:15:19,253 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 237 transitions, 3000 flow, removed 10 selfloop flow, removed 3 redundant places. [2024-02-02 09:15:19,256 INFO L231 Difference]: Finished difference. Result has 147 places, 182 transitions, 2482 flow [2024-02-02 09:15:19,256 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=2330, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2482, PETRI_PLACES=147, PETRI_TRANSITIONS=182} [2024-02-02 09:15:19,258 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 71 predicate places. [2024-02-02 09:15:19,258 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 182 transitions, 2482 flow [2024-02-02 09:15:19,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.875) internal successors, (143), 8 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:19,258 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:15:19,258 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:15:19,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-02-02 09:15:19,259 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 58 more)] === [2024-02-02 09:15:19,259 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:15:19,259 INFO L85 PathProgramCache]: Analyzing trace with hash -135959758, now seen corresponding path program 3 times [2024-02-02 09:15:19,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:15:19,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771985868] [2024-02-02 09:15:19,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:15:19,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:15:19,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:15:19,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:15:19,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:15:19,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771985868] [2024-02-02 09:15:19,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771985868] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:15:19,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:15:19,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-02 09:15:19,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169515753] [2024-02-02 09:15:19,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:15:19,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-02 09:15:19,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:15:19,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-02 09:15:19,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-02-02 09:15:19,568 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 72 [2024-02-02 09:15:19,568 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 182 transitions, 2482 flow. Second operand has 8 states, 8 states have (on average 19.625) internal successors, (157), 8 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:19,568 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:15:19,569 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 72 [2024-02-02 09:15:19,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:15:20,244 INFO L124 PetriNetUnfolderBase]: 2152/3963 cut-off events. [2024-02-02 09:15:20,245 INFO L125 PetriNetUnfolderBase]: For 28984/29210 co-relation queries the response was YES. [2024-02-02 09:15:20,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18493 conditions, 3963 events. 2152/3963 cut-off events. For 28984/29210 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 25599 event pairs, 658 based on Foata normal form. 77/3834 useless extension candidates. Maximal degree in co-relation 18428. Up to 1623 conditions per place. [2024-02-02 09:15:20,270 INFO L140 encePairwiseOnDemand]: 56/72 looper letters, 139 selfloop transitions, 99 changer transitions 0/256 dead transitions. [2024-02-02 09:15:20,270 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 256 transitions, 3553 flow [2024-02-02 09:15:20,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-02 09:15:20,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-02 09:15:20,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 244 transitions. [2024-02-02 09:15:20,271 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48412698412698413 [2024-02-02 09:15:20,271 INFO L175 Difference]: Start difference. First operand has 147 places, 182 transitions, 2482 flow. Second operand 7 states and 244 transitions. [2024-02-02 09:15:20,272 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 256 transitions, 3553 flow [2024-02-02 09:15:20,317 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 256 transitions, 3383 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-02-02 09:15:20,320 INFO L231 Difference]: Finished difference. Result has 149 places, 207 transitions, 2953 flow [2024-02-02 09:15:20,320 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=2338, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2953, PETRI_PLACES=149, PETRI_TRANSITIONS=207} [2024-02-02 09:15:20,321 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 73 predicate places. [2024-02-02 09:15:20,321 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 207 transitions, 2953 flow [2024-02-02 09:15:20,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.625) internal successors, (157), 8 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:20,322 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:15:20,322 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:15:20,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-02-02 09:15:20,322 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting P0Err9ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 58 more)] === [2024-02-02 09:15:20,322 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:15:20,323 INFO L85 PathProgramCache]: Analyzing trace with hash -745963356, now seen corresponding path program 2 times [2024-02-02 09:15:20,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:15:20,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545884089] [2024-02-02 09:15:20,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:15:20,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:15:20,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:15:20,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:15:20,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:15:20,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545884089] [2024-02-02 09:15:20,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545884089] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:15:20,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:15:20,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-02 09:15:20,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857678274] [2024-02-02 09:15:20,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:15:20,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-02 09:15:20,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:15:20,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-02 09:15:20,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-02-02 09:15:20,574 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 72 [2024-02-02 09:15:20,574 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 207 transitions, 2953 flow. Second operand has 8 states, 8 states have (on average 17.875) internal successors, (143), 8 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:20,574 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:15:20,574 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 72 [2024-02-02 09:15:20,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:15:21,246 INFO L124 PetriNetUnfolderBase]: 2423/4272 cut-off events. [2024-02-02 09:15:21,247 INFO L125 PetriNetUnfolderBase]: For 31845/32137 co-relation queries the response was YES. [2024-02-02 09:15:21,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20902 conditions, 4272 events. 2423/4272 cut-off events. For 31845/32137 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 26465 event pairs, 564 based on Foata normal form. 43/4036 useless extension candidates. Maximal degree in co-relation 20836. Up to 1968 conditions per place. [2024-02-02 09:15:21,281 INFO L140 encePairwiseOnDemand]: 63/72 looper letters, 157 selfloop transitions, 80 changer transitions 0/254 dead transitions. [2024-02-02 09:15:21,281 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 254 transitions, 3669 flow [2024-02-02 09:15:21,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-02 09:15:21,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-02 09:15:21,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 200 transitions. [2024-02-02 09:15:21,282 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46296296296296297 [2024-02-02 09:15:21,283 INFO L175 Difference]: Start difference. First operand has 149 places, 207 transitions, 2953 flow. Second operand 6 states and 200 transitions. [2024-02-02 09:15:21,283 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 254 transitions, 3669 flow [2024-02-02 09:15:21,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 254 transitions, 3467 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-02-02 09:15:21,422 INFO L231 Difference]: Finished difference. Result has 148 places, 207 transitions, 2932 flow [2024-02-02 09:15:21,422 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=2751, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2932, PETRI_PLACES=148, PETRI_TRANSITIONS=207} [2024-02-02 09:15:21,422 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 72 predicate places. [2024-02-02 09:15:21,422 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 207 transitions, 2932 flow [2024-02-02 09:15:21,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.875) internal successors, (143), 8 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:21,423 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:15:21,423 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:15:21,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-02-02 09:15:21,423 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting P0Err9ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 58 more)] === [2024-02-02 09:15:21,424 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:15:21,424 INFO L85 PathProgramCache]: Analyzing trace with hash -723702750, now seen corresponding path program 3 times [2024-02-02 09:15:21,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:15:21,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376807652] [2024-02-02 09:15:21,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:15:21,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:15:21,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:15:21,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:15:21,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:15:21,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376807652] [2024-02-02 09:15:21,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376807652] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:15:21,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:15:21,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-02 09:15:21,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564373435] [2024-02-02 09:15:21,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:15:21,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-02 09:15:21,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:15:21,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-02 09:15:21,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-02-02 09:15:21,666 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 72 [2024-02-02 09:15:21,667 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 207 transitions, 2932 flow. Second operand has 8 states, 8 states have (on average 17.875) internal successors, (143), 8 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:21,667 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:15:21,667 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 72 [2024-02-02 09:15:21,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:15:22,615 INFO L124 PetriNetUnfolderBase]: 2821/4904 cut-off events. [2024-02-02 09:15:22,615 INFO L125 PetriNetUnfolderBase]: For 35538/35871 co-relation queries the response was YES. [2024-02-02 09:15:22,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23590 conditions, 4904 events. 2821/4904 cut-off events. For 35538/35871 co-relation queries the response was YES. Maximal size of possible extension queue 212. Compared 31087 event pairs, 630 based on Foata normal form. 130/4755 useless extension candidates. Maximal degree in co-relation 23525. Up to 2095 conditions per place. [2024-02-02 09:15:22,668 INFO L140 encePairwiseOnDemand]: 62/72 looper letters, 187 selfloop transitions, 77 changer transitions 0/281 dead transitions. [2024-02-02 09:15:22,669 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 281 transitions, 3944 flow [2024-02-02 09:15:22,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-02 09:15:22,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-02 09:15:22,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 224 transitions. [2024-02-02 09:15:22,670 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-02-02 09:15:22,670 INFO L175 Difference]: Start difference. First operand has 148 places, 207 transitions, 2932 flow. Second operand 7 states and 224 transitions. [2024-02-02 09:15:22,670 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 281 transitions, 3944 flow [2024-02-02 09:15:22,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 281 transitions, 3744 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-02-02 09:15:22,753 INFO L231 Difference]: Finished difference. Result has 149 places, 218 transitions, 3029 flow [2024-02-02 09:15:22,753 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=2762, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3029, PETRI_PLACES=149, PETRI_TRANSITIONS=218} [2024-02-02 09:15:22,754 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 73 predicate places. [2024-02-02 09:15:22,754 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 218 transitions, 3029 flow [2024-02-02 09:15:22,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.875) internal successors, (143), 8 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:22,754 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:15:22,754 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:15:22,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-02-02 09:15:22,755 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 58 more)] === [2024-02-02 09:15:22,755 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:15:22,755 INFO L85 PathProgramCache]: Analyzing trace with hash -785484238, now seen corresponding path program 1 times [2024-02-02 09:15:22,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:15:22,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058379539] [2024-02-02 09:15:22,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:15:22,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:15:22,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:15:22,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:15:22,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:15:22,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058379539] [2024-02-02 09:15:22,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058379539] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:15:22,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:15:22,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-02 09:15:22,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502254579] [2024-02-02 09:15:22,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:15:22,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-02 09:15:22,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:15:22,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-02 09:15:22,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-02-02 09:15:22,988 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 72 [2024-02-02 09:15:22,989 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 218 transitions, 3029 flow. Second operand has 8 states, 8 states have (on average 17.5) internal successors, (140), 8 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:22,989 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:15:22,989 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 72 [2024-02-02 09:15:22,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:15:23,780 INFO L124 PetriNetUnfolderBase]: 2905/5004 cut-off events. [2024-02-02 09:15:23,780 INFO L125 PetriNetUnfolderBase]: For 35642/35958 co-relation queries the response was YES. [2024-02-02 09:15:23,803 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24188 conditions, 5004 events. 2905/5004 cut-off events. For 35642/35958 co-relation queries the response was YES. Maximal size of possible extension queue 221. Compared 31777 event pairs, 605 based on Foata normal form. 63/4785 useless extension candidates. Maximal degree in co-relation 24123. Up to 2821 conditions per place. [2024-02-02 09:15:23,822 INFO L140 encePairwiseOnDemand]: 61/72 looper letters, 214 selfloop transitions, 76 changer transitions 0/307 dead transitions. [2024-02-02 09:15:23,822 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 307 transitions, 4330 flow [2024-02-02 09:15:23,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-02 09:15:23,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-02 09:15:23,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 244 transitions. [2024-02-02 09:15:23,824 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4236111111111111 [2024-02-02 09:15:23,824 INFO L175 Difference]: Start difference. First operand has 149 places, 218 transitions, 3029 flow. Second operand 8 states and 244 transitions. [2024-02-02 09:15:23,824 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 307 transitions, 4330 flow [2024-02-02 09:15:23,899 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 307 transitions, 4242 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-02-02 09:15:23,903 INFO L231 Difference]: Finished difference. Result has 155 places, 233 transitions, 3252 flow [2024-02-02 09:15:23,903 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=2954, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3252, PETRI_PLACES=155, PETRI_TRANSITIONS=233} [2024-02-02 09:15:23,904 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 79 predicate places. [2024-02-02 09:15:23,904 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 233 transitions, 3252 flow [2024-02-02 09:15:23,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.5) internal successors, (140), 8 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:23,904 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:15:23,904 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:15:23,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-02-02 09:15:23,904 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting P0Err9ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 58 more)] === [2024-02-02 09:15:23,905 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:15:23,905 INFO L85 PathProgramCache]: Analyzing trace with hash -602166788, now seen corresponding path program 4 times [2024-02-02 09:15:23,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:15:23,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811320700] [2024-02-02 09:15:23,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:15:23,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:15:23,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:15:24,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:15:24,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:15:24,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811320700] [2024-02-02 09:15:24,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811320700] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:15:24,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:15:24,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-02 09:15:24,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083583691] [2024-02-02 09:15:24,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:15:24,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-02 09:15:24,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:15:24,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-02 09:15:24,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-02-02 09:15:24,110 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 72 [2024-02-02 09:15:24,110 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 233 transitions, 3252 flow. Second operand has 8 states, 8 states have (on average 17.875) internal successors, (143), 8 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:24,111 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:15:24,111 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 72 [2024-02-02 09:15:24,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:15:24,959 INFO L124 PetriNetUnfolderBase]: 2982/5191 cut-off events. [2024-02-02 09:15:24,959 INFO L125 PetriNetUnfolderBase]: For 39741/40032 co-relation queries the response was YES. [2024-02-02 09:15:24,979 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25029 conditions, 5191 events. 2982/5191 cut-off events. For 39741/40032 co-relation queries the response was YES. Maximal size of possible extension queue 238. Compared 33335 event pairs, 686 based on Foata normal form. 134/5077 useless extension candidates. Maximal degree in co-relation 24962. Up to 2254 conditions per place. [2024-02-02 09:15:24,994 INFO L140 encePairwiseOnDemand]: 56/72 looper letters, 161 selfloop transitions, 116 changer transitions 0/294 dead transitions. [2024-02-02 09:15:24,994 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 294 transitions, 4177 flow [2024-02-02 09:15:24,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-02 09:15:24,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-02 09:15:24,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 229 transitions. [2024-02-02 09:15:24,995 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45436507936507936 [2024-02-02 09:15:24,995 INFO L175 Difference]: Start difference. First operand has 155 places, 233 transitions, 3252 flow. Second operand 7 states and 229 transitions. [2024-02-02 09:15:24,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 294 transitions, 4177 flow [2024-02-02 09:15:25,077 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 294 transitions, 4090 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-02-02 09:15:25,081 INFO L231 Difference]: Finished difference. Result has 161 places, 239 transitions, 3519 flow [2024-02-02 09:15:25,082 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=3171, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3519, PETRI_PLACES=161, PETRI_TRANSITIONS=239} [2024-02-02 09:15:25,082 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 85 predicate places. [2024-02-02 09:15:25,082 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 239 transitions, 3519 flow [2024-02-02 09:15:25,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.875) internal successors, (143), 8 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:25,082 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:15:25,082 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:15:25,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-02-02 09:15:25,083 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 58 more)] === [2024-02-02 09:15:25,083 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:15:25,083 INFO L85 PathProgramCache]: Analyzing trace with hash -663948276, now seen corresponding path program 2 times [2024-02-02 09:15:25,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:15:25,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437180738] [2024-02-02 09:15:25,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:15:25,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:15:25,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:15:25,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:15:25,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:15:25,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437180738] [2024-02-02 09:15:25,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437180738] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:15:25,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:15:25,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-02 09:15:25,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504544149] [2024-02-02 09:15:25,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:15:25,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-02 09:15:25,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:15:25,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-02 09:15:25,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-02-02 09:15:25,311 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 72 [2024-02-02 09:15:25,311 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 239 transitions, 3519 flow. Second operand has 8 states, 8 states have (on average 17.5) internal successors, (140), 8 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:25,311 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:15:25,311 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 72 [2024-02-02 09:15:25,311 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:15:26,152 INFO L124 PetriNetUnfolderBase]: 3020/5218 cut-off events. [2024-02-02 09:15:26,153 INFO L125 PetriNetUnfolderBase]: For 46656/46940 co-relation queries the response was YES. [2024-02-02 09:15:26,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26620 conditions, 5218 events. 3020/5218 cut-off events. For 46656/46940 co-relation queries the response was YES. Maximal size of possible extension queue 241. Compared 33500 event pairs, 609 based on Foata normal form. 43/4992 useless extension candidates. Maximal degree in co-relation 26550. Up to 2957 conditions per place. [2024-02-02 09:15:26,203 INFO L140 encePairwiseOnDemand]: 58/72 looper letters, 199 selfloop transitions, 99 changer transitions 0/315 dead transitions. [2024-02-02 09:15:26,203 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 315 transitions, 4748 flow [2024-02-02 09:15:26,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-02 09:15:26,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-02 09:15:26,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 241 transitions. [2024-02-02 09:15:26,204 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4184027777777778 [2024-02-02 09:15:26,205 INFO L175 Difference]: Start difference. First operand has 161 places, 239 transitions, 3519 flow. Second operand 8 states and 241 transitions. [2024-02-02 09:15:26,205 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 315 transitions, 4748 flow [2024-02-02 09:15:26,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 315 transitions, 4530 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-02-02 09:15:26,306 INFO L231 Difference]: Finished difference. Result has 165 places, 259 transitions, 3774 flow [2024-02-02 09:15:26,306 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=3317, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3774, PETRI_PLACES=165, PETRI_TRANSITIONS=259} [2024-02-02 09:15:26,307 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 89 predicate places. [2024-02-02 09:15:26,307 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 259 transitions, 3774 flow [2024-02-02 09:15:26,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.5) internal successors, (140), 8 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:26,307 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:15:26,307 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:15:26,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-02-02 09:15:26,307 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 58 more)] === [2024-02-02 09:15:26,308 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:15:26,308 INFO L85 PathProgramCache]: Analyzing trace with hash 249081590, now seen corresponding path program 3 times [2024-02-02 09:15:26,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:15:26,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50598488] [2024-02-02 09:15:26,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:15:26,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:15:26,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:15:26,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:15:26,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:15:26,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50598488] [2024-02-02 09:15:26,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50598488] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:15:26,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:15:26,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-02 09:15:26,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132753112] [2024-02-02 09:15:26,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:15:26,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-02 09:15:26,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:15:26,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-02 09:15:26,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-02-02 09:15:26,524 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 72 [2024-02-02 09:15:26,524 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 259 transitions, 3774 flow. Second operand has 8 states, 8 states have (on average 17.5) internal successors, (140), 8 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:26,525 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:15:26,525 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 72 [2024-02-02 09:15:26,525 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:15:27,400 INFO L124 PetriNetUnfolderBase]: 3116/5378 cut-off events. [2024-02-02 09:15:27,400 INFO L125 PetriNetUnfolderBase]: For 45984/46276 co-relation queries the response was YES. [2024-02-02 09:15:27,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27541 conditions, 5378 events. 3116/5378 cut-off events. For 45984/46276 co-relation queries the response was YES. Maximal size of possible extension queue 258. Compared 34632 event pairs, 595 based on Foata normal form. 35/5144 useless extension candidates. Maximal degree in co-relation 27469. Up to 2971 conditions per place. [2024-02-02 09:15:27,453 INFO L140 encePairwiseOnDemand]: 60/72 looper letters, 197 selfloop transitions, 119 changer transitions 0/333 dead transitions. [2024-02-02 09:15:27,453 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 333 transitions, 5009 flow [2024-02-02 09:15:27,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-02 09:15:27,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-02 09:15:27,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 239 transitions. [2024-02-02 09:15:27,454 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4149305555555556 [2024-02-02 09:15:27,454 INFO L175 Difference]: Start difference. First operand has 165 places, 259 transitions, 3774 flow. Second operand 8 states and 239 transitions. [2024-02-02 09:15:27,454 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 333 transitions, 5009 flow [2024-02-02 09:15:27,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 333 transitions, 4899 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-02-02 09:15:27,556 INFO L231 Difference]: Finished difference. Result has 171 places, 279 transitions, 4149 flow [2024-02-02 09:15:27,556 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=3677, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4149, PETRI_PLACES=171, PETRI_TRANSITIONS=279} [2024-02-02 09:15:27,557 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 95 predicate places. [2024-02-02 09:15:27,557 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 279 transitions, 4149 flow [2024-02-02 09:15:27,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.5) internal successors, (140), 8 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:27,557 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:15:27,557 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:15:27,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-02-02 09:15:27,557 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 58 more)] === [2024-02-02 09:15:27,558 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:15:27,558 INFO L85 PathProgramCache]: Analyzing trace with hash 250274780, now seen corresponding path program 4 times [2024-02-02 09:15:27,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:15:27,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691625281] [2024-02-02 09:15:27,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:15:27,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:15:27,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:15:27,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:15:27,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:15:27,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691625281] [2024-02-02 09:15:27,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691625281] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:15:27,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:15:27,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-02 09:15:27,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6820154] [2024-02-02 09:15:27,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:15:27,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-02 09:15:27,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:15:27,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-02 09:15:27,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-02-02 09:15:27,742 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 72 [2024-02-02 09:15:27,743 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 279 transitions, 4149 flow. Second operand has 8 states, 8 states have (on average 17.5) internal successors, (140), 8 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:27,743 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:15:27,743 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 72 [2024-02-02 09:15:27,743 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:15:28,630 INFO L124 PetriNetUnfolderBase]: 3146/5428 cut-off events. [2024-02-02 09:15:28,630 INFO L125 PetriNetUnfolderBase]: For 50236/50552 co-relation queries the response was YES. [2024-02-02 09:15:28,658 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28618 conditions, 5428 events. 3146/5428 cut-off events. For 50236/50552 co-relation queries the response was YES. Maximal size of possible extension queue 269. Compared 35018 event pairs, 615 based on Foata normal form. 25/5178 useless extension candidates. Maximal degree in co-relation 28544. Up to 2983 conditions per place. [2024-02-02 09:15:28,677 INFO L140 encePairwiseOnDemand]: 60/72 looper letters, 198 selfloop transitions, 124 changer transitions 0/339 dead transitions. [2024-02-02 09:15:28,677 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 339 transitions, 5305 flow [2024-02-02 09:15:28,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-02 09:15:28,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-02 09:15:28,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 238 transitions. [2024-02-02 09:15:28,679 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4131944444444444 [2024-02-02 09:15:28,679 INFO L175 Difference]: Start difference. First operand has 171 places, 279 transitions, 4149 flow. Second operand 8 states and 238 transitions. [2024-02-02 09:15:28,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 339 transitions, 5305 flow [2024-02-02 09:15:28,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 339 transitions, 5202 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-02 09:15:28,775 INFO L231 Difference]: Finished difference. Result has 178 places, 287 transitions, 4447 flow [2024-02-02 09:15:28,775 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=4052, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4447, PETRI_PLACES=178, PETRI_TRANSITIONS=287} [2024-02-02 09:15:28,776 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 102 predicate places. [2024-02-02 09:15:28,776 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 287 transitions, 4447 flow [2024-02-02 09:15:28,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.5) internal successors, (140), 8 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:28,776 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:15:28,777 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:15:28,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-02-02 09:15:28,777 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 58 more)] === [2024-02-02 09:15:28,777 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:15:28,777 INFO L85 PathProgramCache]: Analyzing trace with hash -116844097, now seen corresponding path program 1 times [2024-02-02 09:15:28,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:15:28,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568146230] [2024-02-02 09:15:28,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:15:28,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:15:28,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:15:28,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:15:28,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:15:28,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568146230] [2024-02-02 09:15:28,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568146230] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:15:28,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:15:28,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-02 09:15:28,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265913697] [2024-02-02 09:15:28,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:15:28,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-02 09:15:28,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:15:28,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-02 09:15:28,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-02-02 09:15:28,917 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 72 [2024-02-02 09:15:28,917 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 287 transitions, 4447 flow. Second operand has 7 states, 7 states have (on average 29.714285714285715) internal successors, (208), 7 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:28,917 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:15:28,917 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 72 [2024-02-02 09:15:28,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:15:29,703 INFO L124 PetriNetUnfolderBase]: 2399/4508 cut-off events. [2024-02-02 09:15:29,703 INFO L125 PetriNetUnfolderBase]: For 54709/55128 co-relation queries the response was YES. [2024-02-02 09:15:29,733 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24791 conditions, 4508 events. 2399/4508 cut-off events. For 54709/55128 co-relation queries the response was YES. Maximal size of possible extension queue 251. Compared 31505 event pairs, 672 based on Foata normal form. 76/4361 useless extension candidates. Maximal degree in co-relation 24714. Up to 3496 conditions per place. [2024-02-02 09:15:29,752 INFO L140 encePairwiseOnDemand]: 65/72 looper letters, 244 selfloop transitions, 36 changer transitions 0/329 dead transitions. [2024-02-02 09:15:29,752 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 329 transitions, 5302 flow [2024-02-02 09:15:29,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-02 09:15:29,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-02 09:15:29,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 270 transitions. [2024-02-02 09:15:29,754 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5357142857142857 [2024-02-02 09:15:29,754 INFO L175 Difference]: Start difference. First operand has 178 places, 287 transitions, 4447 flow. Second operand 7 states and 270 transitions. [2024-02-02 09:15:29,754 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 329 transitions, 5302 flow [2024-02-02 09:15:29,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 329 transitions, 5030 flow, removed 20 selfloop flow, removed 6 redundant places. [2024-02-02 09:15:29,928 INFO L231 Difference]: Finished difference. Result has 181 places, 301 transitions, 4452 flow [2024-02-02 09:15:29,928 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=4177, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4452, PETRI_PLACES=181, PETRI_TRANSITIONS=301} [2024-02-02 09:15:29,928 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 105 predicate places. [2024-02-02 09:15:29,929 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 301 transitions, 4452 flow [2024-02-02 09:15:29,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 29.714285714285715) internal successors, (208), 7 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:29,929 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:15:29,929 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:15:29,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-02-02 09:15:29,929 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting P0Err9ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 58 more)] === [2024-02-02 09:15:29,930 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:15:29,930 INFO L85 PathProgramCache]: Analyzing trace with hash 95436177, now seen corresponding path program 1 times [2024-02-02 09:15:29,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:15:29,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240457491] [2024-02-02 09:15:29,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:15:29,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:15:29,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:15:30,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:15:30,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:15:30,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240457491] [2024-02-02 09:15:30,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240457491] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:15:30,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:15:30,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-02 09:15:30,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557812882] [2024-02-02 09:15:30,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:15:30,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-02 09:15:30,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:15:30,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-02 09:15:30,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-02-02 09:15:30,191 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 72 [2024-02-02 09:15:30,191 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 301 transitions, 4452 flow. Second operand has 8 states, 8 states have (on average 18.0) internal successors, (144), 8 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:30,191 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:15:30,191 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 72 [2024-02-02 09:15:30,192 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:15:31,235 INFO L124 PetriNetUnfolderBase]: 2961/5172 cut-off events. [2024-02-02 09:15:31,235 INFO L125 PetriNetUnfolderBase]: For 52950/53279 co-relation queries the response was YES. [2024-02-02 09:15:31,268 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27616 conditions, 5172 events. 2961/5172 cut-off events. For 52950/53279 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 33109 event pairs, 663 based on Foata normal form. 102/4982 useless extension candidates. Maximal degree in co-relation 27536. Up to 2484 conditions per place. [2024-02-02 09:15:31,288 INFO L140 encePairwiseOnDemand]: 60/72 looper letters, 249 selfloop transitions, 107 changer transitions 0/373 dead transitions. [2024-02-02 09:15:31,289 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 373 transitions, 5813 flow [2024-02-02 09:15:31,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-02 09:15:31,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-02 09:15:31,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 226 transitions. [2024-02-02 09:15:31,290 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44841269841269843 [2024-02-02 09:15:31,290 INFO L175 Difference]: Start difference. First operand has 181 places, 301 transitions, 4452 flow. Second operand 7 states and 226 transitions. [2024-02-02 09:15:31,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 373 transitions, 5813 flow [2024-02-02 09:15:31,405 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 373 transitions, 5733 flow, removed 19 selfloop flow, removed 3 redundant places. [2024-02-02 09:15:31,410 INFO L231 Difference]: Finished difference. Result has 186 places, 313 transitions, 4883 flow [2024-02-02 09:15:31,410 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=4374, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=301, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4883, PETRI_PLACES=186, PETRI_TRANSITIONS=313} [2024-02-02 09:15:31,411 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 110 predicate places. [2024-02-02 09:15:31,411 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 313 transitions, 4883 flow [2024-02-02 09:15:31,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.0) internal successors, (144), 8 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:31,411 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:15:31,411 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:15:31,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-02-02 09:15:31,412 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 58 more)] === [2024-02-02 09:15:31,412 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:15:31,412 INFO L85 PathProgramCache]: Analyzing trace with hash 376861549, now seen corresponding path program 1 times [2024-02-02 09:15:31,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:15:31,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668547717] [2024-02-02 09:15:31,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:15:31,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:15:31,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:15:31,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:15:31,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:15:31,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668547717] [2024-02-02 09:15:31,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668547717] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:15:31,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:15:31,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-02 09:15:31,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844072295] [2024-02-02 09:15:31,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:15:31,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-02 09:15:31,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:15:31,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-02 09:15:31,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=40, Unknown=0, NotChecked=0, Total=72 [2024-02-02 09:15:31,630 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 72 [2024-02-02 09:15:31,631 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 313 transitions, 4883 flow. Second operand has 9 states, 9 states have (on average 29.444444444444443) internal successors, (265), 9 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:31,631 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:15:31,631 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 72 [2024-02-02 09:15:31,631 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:15:32,613 INFO L124 PetriNetUnfolderBase]: 2267/4324 cut-off events. [2024-02-02 09:15:32,614 INFO L125 PetriNetUnfolderBase]: For 56924/57378 co-relation queries the response was YES. [2024-02-02 09:15:32,637 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24969 conditions, 4324 events. 2267/4324 cut-off events. For 56924/57378 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 30460 event pairs, 422 based on Foata normal form. 62/4164 useless extension candidates. Maximal degree in co-relation 24888. Up to 2085 conditions per place. [2024-02-02 09:15:32,654 INFO L140 encePairwiseOnDemand]: 62/72 looper letters, 183 selfloop transitions, 140 changer transitions 0/372 dead transitions. [2024-02-02 09:15:32,655 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 372 transitions, 6252 flow [2024-02-02 09:15:32,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-02 09:15:32,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-02 09:15:32,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 282 transitions. [2024-02-02 09:15:32,656 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5595238095238095 [2024-02-02 09:15:32,656 INFO L175 Difference]: Start difference. First operand has 186 places, 313 transitions, 4883 flow. Second operand 7 states and 282 transitions. [2024-02-02 09:15:32,656 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 372 transitions, 6252 flow [2024-02-02 09:15:32,766 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 372 transitions, 6014 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-02-02 09:15:32,771 INFO L231 Difference]: Finished difference. Result has 190 places, 336 transitions, 5514 flow [2024-02-02 09:15:32,772 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=4671, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=313, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5514, PETRI_PLACES=190, PETRI_TRANSITIONS=336} [2024-02-02 09:15:32,772 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 114 predicate places. [2024-02-02 09:15:32,772 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 336 transitions, 5514 flow [2024-02-02 09:15:32,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 29.444444444444443) internal successors, (265), 9 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:32,773 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:15:32,773 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:15:32,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-02-02 09:15:32,773 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 58 more)] === [2024-02-02 09:15:32,773 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:15:32,773 INFO L85 PathProgramCache]: Analyzing trace with hash 591810212, now seen corresponding path program 1 times [2024-02-02 09:15:32,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:15:32,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500509113] [2024-02-02 09:15:32,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:15:32,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:15:32,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:15:33,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:15:33,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:15:33,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500509113] [2024-02-02 09:15:33,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500509113] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:15:33,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:15:33,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-02 09:15:33,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800886871] [2024-02-02 09:15:33,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:15:33,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-02 09:15:33,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:15:33,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-02 09:15:33,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-02-02 09:15:33,061 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 72 [2024-02-02 09:15:33,061 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 336 transitions, 5514 flow. Second operand has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 9 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:33,061 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:15:33,062 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 72 [2024-02-02 09:15:33,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:15:34,111 INFO L124 PetriNetUnfolderBase]: 3235/5699 cut-off events. [2024-02-02 09:15:34,111 INFO L125 PetriNetUnfolderBase]: For 67735/68103 co-relation queries the response was YES. [2024-02-02 09:15:34,149 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32246 conditions, 5699 events. 3235/5699 cut-off events. For 67735/68103 co-relation queries the response was YES. Maximal size of possible extension queue 259. Compared 37521 event pairs, 870 based on Foata normal form. 47/5553 useless extension candidates. Maximal degree in co-relation 32162. Up to 2730 conditions per place. [2024-02-02 09:15:34,171 INFO L140 encePairwiseOnDemand]: 59/72 looper letters, 266 selfloop transitions, 132 changer transitions 0/415 dead transitions. [2024-02-02 09:15:34,171 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 415 transitions, 6939 flow [2024-02-02 09:15:34,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-02 09:15:34,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-02 09:15:34,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 256 transitions. [2024-02-02 09:15:34,172 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-02-02 09:15:34,172 INFO L175 Difference]: Start difference. First operand has 190 places, 336 transitions, 5514 flow. Second operand 8 states and 256 transitions. [2024-02-02 09:15:34,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 415 transitions, 6939 flow [2024-02-02 09:15:34,339 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 415 transitions, 6784 flow, removed 36 selfloop flow, removed 2 redundant places. [2024-02-02 09:15:34,345 INFO L231 Difference]: Finished difference. Result has 197 places, 344 transitions, 5796 flow [2024-02-02 09:15:34,345 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=5412, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=336, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=126, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5796, PETRI_PLACES=197, PETRI_TRANSITIONS=344} [2024-02-02 09:15:34,346 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 121 predicate places. [2024-02-02 09:15:34,346 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 344 transitions, 5796 flow [2024-02-02 09:15:34,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 9 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:34,346 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:15:34,346 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:15:34,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-02-02 09:15:34,347 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 58 more)] === [2024-02-02 09:15:34,347 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:15:34,347 INFO L85 PathProgramCache]: Analyzing trace with hash 1566198118, now seen corresponding path program 1 times [2024-02-02 09:15:34,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:15:34,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46755846] [2024-02-02 09:15:34,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:15:34,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:15:34,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:15:34,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:15:34,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:15:34,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46755846] [2024-02-02 09:15:34,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46755846] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:15:34,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:15:34,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-02 09:15:34,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492611899] [2024-02-02 09:15:34,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:15:34,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-02 09:15:34,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:15:34,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-02 09:15:34,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-02-02 09:15:34,497 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 72 [2024-02-02 09:15:34,497 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 344 transitions, 5796 flow. Second operand has 7 states, 7 states have (on average 29.714285714285715) internal successors, (208), 7 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:34,497 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:15:34,497 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 72 [2024-02-02 09:15:34,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:15:35,343 INFO L124 PetriNetUnfolderBase]: 2452/4692 cut-off events. [2024-02-02 09:15:35,343 INFO L125 PetriNetUnfolderBase]: For 69872/70401 co-relation queries the response was YES. [2024-02-02 09:15:35,376 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27627 conditions, 4692 events. 2452/4692 cut-off events. For 69872/70401 co-relation queries the response was YES. Maximal size of possible extension queue 261. Compared 33638 event pairs, 551 based on Foata normal form. 87/4630 useless extension candidates. Maximal degree in co-relation 27541. Up to 2117 conditions per place. [2024-02-02 09:15:35,395 INFO L140 encePairwiseOnDemand]: 64/72 looper letters, 212 selfloop transitions, 130 changer transitions 0/391 dead transitions. [2024-02-02 09:15:35,396 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 391 transitions, 6936 flow [2024-02-02 09:15:35,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-02 09:15:35,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-02 09:15:35,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 279 transitions. [2024-02-02 09:15:35,397 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5535714285714286 [2024-02-02 09:15:35,397 INFO L175 Difference]: Start difference. First operand has 197 places, 344 transitions, 5796 flow. Second operand 7 states and 279 transitions. [2024-02-02 09:15:35,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 391 transitions, 6936 flow [2024-02-02 09:15:35,557 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 391 transitions, 6821 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-02-02 09:15:35,563 INFO L231 Difference]: Finished difference. Result has 203 places, 356 transitions, 6248 flow [2024-02-02 09:15:35,563 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=5683, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=344, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6248, PETRI_PLACES=203, PETRI_TRANSITIONS=356} [2024-02-02 09:15:35,564 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 127 predicate places. [2024-02-02 09:15:35,565 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 356 transitions, 6248 flow [2024-02-02 09:15:35,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 29.714285714285715) internal successors, (208), 7 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:35,565 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:15:35,565 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:15:35,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-02-02 09:15:35,565 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 58 more)] === [2024-02-02 09:15:35,565 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:15:35,566 INFO L85 PathProgramCache]: Analyzing trace with hash 16914020, now seen corresponding path program 2 times [2024-02-02 09:15:35,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:15:35,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398405803] [2024-02-02 09:15:35,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:15:35,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:15:35,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:15:35,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:15:35,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:15:35,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398405803] [2024-02-02 09:15:35,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398405803] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:15:35,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:15:35,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-02 09:15:35,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21531082] [2024-02-02 09:15:35,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:15:35,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-02 09:15:35,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:15:35,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-02 09:15:35,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-02-02 09:15:35,697 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 72 [2024-02-02 09:15:35,697 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 356 transitions, 6248 flow. Second operand has 7 states, 7 states have (on average 29.714285714285715) internal successors, (208), 7 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:35,697 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:15:35,697 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 72 [2024-02-02 09:15:35,697 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:15:36,595 INFO L124 PetriNetUnfolderBase]: 2428/4652 cut-off events. [2024-02-02 09:15:36,595 INFO L125 PetriNetUnfolderBase]: For 74570/75083 co-relation queries the response was YES. [2024-02-02 09:15:36,629 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28144 conditions, 4652 events. 2428/4652 cut-off events. For 74570/75083 co-relation queries the response was YES. Maximal size of possible extension queue 255. Compared 33273 event pairs, 539 based on Foata normal form. 87/4590 useless extension candidates. Maximal degree in co-relation 28055. Up to 2113 conditions per place. [2024-02-02 09:15:36,647 INFO L140 encePairwiseOnDemand]: 65/72 looper letters, 212 selfloop transitions, 129 changer transitions 0/390 dead transitions. [2024-02-02 09:15:36,648 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 390 transitions, 7204 flow [2024-02-02 09:15:36,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-02 09:15:36,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-02 09:15:36,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 275 transitions. [2024-02-02 09:15:36,649 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5456349206349206 [2024-02-02 09:15:36,649 INFO L175 Difference]: Start difference. First operand has 203 places, 356 transitions, 6248 flow. Second operand 7 states and 275 transitions. [2024-02-02 09:15:36,649 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 390 transitions, 7204 flow [2024-02-02 09:15:36,838 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 390 transitions, 7049 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-02-02 09:15:36,844 INFO L231 Difference]: Finished difference. Result has 207 places, 358 transitions, 6389 flow [2024-02-02 09:15:36,845 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=6095, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=356, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=127, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6389, PETRI_PLACES=207, PETRI_TRANSITIONS=358} [2024-02-02 09:15:36,845 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 131 predicate places. [2024-02-02 09:15:36,845 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 358 transitions, 6389 flow [2024-02-02 09:15:36,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 29.714285714285715) internal successors, (208), 7 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:36,846 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:15:36,846 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:15:36,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-02-02 09:15:36,846 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 58 more)] === [2024-02-02 09:15:36,846 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:15:36,846 INFO L85 PathProgramCache]: Analyzing trace with hash 61757009, now seen corresponding path program 1 times [2024-02-02 09:15:36,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:15:36,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010894617] [2024-02-02 09:15:36,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:15:36,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:15:36,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:15:37,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:15:37,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:15:37,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010894617] [2024-02-02 09:15:37,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010894617] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:15:37,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:15:37,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-02 09:15:37,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330664169] [2024-02-02 09:15:37,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:15:37,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-02 09:15:37,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:15:37,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-02 09:15:37,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-02-02 09:15:37,045 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 72 [2024-02-02 09:15:37,045 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 358 transitions, 6389 flow. Second operand has 8 states, 8 states have (on average 19.875) internal successors, (159), 8 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:37,045 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:15:37,045 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 72 [2024-02-02 09:15:37,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:15:37,968 INFO L124 PetriNetUnfolderBase]: 2706/5061 cut-off events. [2024-02-02 09:15:37,968 INFO L125 PetriNetUnfolderBase]: For 81930/82447 co-relation queries the response was YES. [2024-02-02 09:15:38,003 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30817 conditions, 5061 events. 2706/5061 cut-off events. For 81930/82447 co-relation queries the response was YES. Maximal size of possible extension queue 269. Compared 35113 event pairs, 733 based on Foata normal form. 158/5057 useless extension candidates. Maximal degree in co-relation 30727. Up to 2344 conditions per place. [2024-02-02 09:15:38,022 INFO L140 encePairwiseOnDemand]: 62/72 looper letters, 223 selfloop transitions, 132 changer transitions 0/390 dead transitions. [2024-02-02 09:15:38,022 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 390 transitions, 7327 flow [2024-02-02 09:15:38,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-02 09:15:38,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-02 09:15:38,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 196 transitions. [2024-02-02 09:15:38,023 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4537037037037037 [2024-02-02 09:15:38,023 INFO L175 Difference]: Start difference. First operand has 207 places, 358 transitions, 6389 flow. Second operand 6 states and 196 transitions. [2024-02-02 09:15:38,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 390 transitions, 7327 flow [2024-02-02 09:15:38,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 390 transitions, 7116 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-02-02 09:15:38,221 INFO L231 Difference]: Finished difference. Result has 209 places, 358 transitions, 6530 flow [2024-02-02 09:15:38,221 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=6184, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=358, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=6530, PETRI_PLACES=209, PETRI_TRANSITIONS=358} [2024-02-02 09:15:38,222 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 133 predicate places. [2024-02-02 09:15:38,222 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 358 transitions, 6530 flow [2024-02-02 09:15:38,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.875) internal successors, (159), 8 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:38,222 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:15:38,222 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:15:38,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-02-02 09:15:38,223 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 58 more)] === [2024-02-02 09:15:38,223 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:15:38,223 INFO L85 PathProgramCache]: Analyzing trace with hash -441169362, now seen corresponding path program 1 times [2024-02-02 09:15:38,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:15:38,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780853555] [2024-02-02 09:15:38,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:15:38,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:15:38,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:15:38,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:15:38,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:15:38,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780853555] [2024-02-02 09:15:38,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780853555] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:15:38,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:15:38,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-02 09:15:38,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79478648] [2024-02-02 09:15:38,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:15:38,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-02 09:15:38,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:15:38,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-02 09:15:38,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-02-02 09:15:38,423 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 72 [2024-02-02 09:15:38,424 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 358 transitions, 6530 flow. Second operand has 8 states, 8 states have (on average 19.625) internal successors, (157), 8 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:38,424 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:15:38,424 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 72 [2024-02-02 09:15:38,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:15:39,529 INFO L124 PetriNetUnfolderBase]: 2730/5122 cut-off events. [2024-02-02 09:15:39,529 INFO L125 PetriNetUnfolderBase]: For 86688/87182 co-relation queries the response was YES. [2024-02-02 09:15:39,557 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31297 conditions, 5122 events. 2730/5122 cut-off events. For 86688/87182 co-relation queries the response was YES. Maximal size of possible extension queue 274. Compared 35576 event pairs, 840 based on Foata normal form. 83/5047 useless extension candidates. Maximal degree in co-relation 31206. Up to 4061 conditions per place. [2024-02-02 09:15:39,573 INFO L140 encePairwiseOnDemand]: 64/72 looper letters, 324 selfloop transitions, 43 changer transitions 0/402 dead transitions. [2024-02-02 09:15:39,574 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 402 transitions, 7547 flow [2024-02-02 09:15:39,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-02 09:15:39,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-02 09:15:39,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 235 transitions. [2024-02-02 09:15:39,577 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4079861111111111 [2024-02-02 09:15:39,578 INFO L175 Difference]: Start difference. First operand has 209 places, 358 transitions, 6530 flow. Second operand 8 states and 235 transitions. [2024-02-02 09:15:39,578 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 402 transitions, 7547 flow [2024-02-02 09:15:39,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 402 transitions, 7265 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-02-02 09:15:39,763 INFO L231 Difference]: Finished difference. Result has 214 places, 370 transitions, 6480 flow [2024-02-02 09:15:39,763 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=6258, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=358, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=323, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6480, PETRI_PLACES=214, PETRI_TRANSITIONS=370} [2024-02-02 09:15:39,765 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 138 predicate places. [2024-02-02 09:15:39,765 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 370 transitions, 6480 flow [2024-02-02 09:15:39,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.625) internal successors, (157), 8 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:39,766 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:15:39,766 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:15:39,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-02-02 09:15:39,766 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 58 more)] === [2024-02-02 09:15:39,766 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:15:39,766 INFO L85 PathProgramCache]: Analyzing trace with hash -1165350214, now seen corresponding path program 2 times [2024-02-02 09:15:39,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:15:39,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543785987] [2024-02-02 09:15:39,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:15:39,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:15:39,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:15:39,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:15:39,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:15:39,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543785987] [2024-02-02 09:15:39,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543785987] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:15:39,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:15:39,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-02 09:15:39,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139926515] [2024-02-02 09:15:39,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:15:39,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-02 09:15:39,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:15:39,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-02 09:15:39,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-02-02 09:15:40,022 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 72 [2024-02-02 09:15:40,023 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 370 transitions, 6480 flow. Second operand has 8 states, 8 states have (on average 19.625) internal successors, (157), 8 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:40,023 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:15:40,023 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 72 [2024-02-02 09:15:40,023 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:15:40,974 INFO L124 PetriNetUnfolderBase]: 2748/5144 cut-off events. [2024-02-02 09:15:40,974 INFO L125 PetriNetUnfolderBase]: For 82788/83290 co-relation queries the response was YES. [2024-02-02 09:15:41,011 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30865 conditions, 5144 events. 2748/5144 cut-off events. For 82788/83290 co-relation queries the response was YES. Maximal size of possible extension queue 276. Compared 35667 event pairs, 838 based on Foata normal form. 91/5075 useless extension candidates. Maximal degree in co-relation 30772. Up to 4077 conditions per place. [2024-02-02 09:15:41,028 INFO L140 encePairwiseOnDemand]: 64/72 looper letters, 324 selfloop transitions, 47 changer transitions 0/406 dead transitions. [2024-02-02 09:15:41,028 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 406 transitions, 7409 flow [2024-02-02 09:15:41,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-02 09:15:41,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-02 09:15:41,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 235 transitions. [2024-02-02 09:15:41,030 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4079861111111111 [2024-02-02 09:15:41,030 INFO L175 Difference]: Start difference. First operand has 214 places, 370 transitions, 6480 flow. Second operand 8 states and 235 transitions. [2024-02-02 09:15:41,030 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 406 transitions, 7409 flow [2024-02-02 09:15:41,222 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 406 transitions, 7353 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-02-02 09:15:41,228 INFO L231 Difference]: Finished difference. Result has 219 places, 372 transitions, 6538 flow [2024-02-02 09:15:41,228 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=6426, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=370, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=325, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6538, PETRI_PLACES=219, PETRI_TRANSITIONS=372} [2024-02-02 09:15:41,228 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 143 predicate places. [2024-02-02 09:15:41,228 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 372 transitions, 6538 flow [2024-02-02 09:15:41,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.625) internal successors, (157), 8 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:41,229 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:15:41,229 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:15:41,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-02-02 09:15:41,229 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 58 more)] === [2024-02-02 09:15:41,229 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:15:41,229 INFO L85 PathProgramCache]: Analyzing trace with hash -761318836, now seen corresponding path program 3 times [2024-02-02 09:15:41,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:15:41,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506643258] [2024-02-02 09:15:41,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:15:41,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:15:41,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:15:41,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:15:41,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:15:41,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506643258] [2024-02-02 09:15:41,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506643258] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:15:41,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:15:41,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-02 09:15:41,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096159805] [2024-02-02 09:15:41,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:15:41,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-02 09:15:41,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:15:41,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-02 09:15:41,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-02-02 09:15:41,427 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 72 [2024-02-02 09:15:41,428 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 372 transitions, 6538 flow. Second operand has 8 states, 8 states have (on average 19.625) internal successors, (157), 8 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:41,428 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:15:41,428 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 72 [2024-02-02 09:15:41,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:15:42,486 INFO L124 PetriNetUnfolderBase]: 2742/5134 cut-off events. [2024-02-02 09:15:42,487 INFO L125 PetriNetUnfolderBase]: For 83622/84124 co-relation queries the response was YES. [2024-02-02 09:15:42,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30878 conditions, 5134 events. 2742/5134 cut-off events. For 83622/84124 co-relation queries the response was YES. Maximal size of possible extension queue 275. Compared 35581 event pairs, 838 based on Foata normal form. 91/5065 useless extension candidates. Maximal degree in co-relation 30784. Up to 4077 conditions per place. [2024-02-02 09:15:42,545 INFO L140 encePairwiseOnDemand]: 64/72 looper letters, 323 selfloop transitions, 49 changer transitions 0/407 dead transitions. [2024-02-02 09:15:42,545 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 407 transitions, 7454 flow [2024-02-02 09:15:42,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-02 09:15:42,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-02 09:15:42,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 235 transitions. [2024-02-02 09:15:42,547 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4079861111111111 [2024-02-02 09:15:42,547 INFO L175 Difference]: Start difference. First operand has 219 places, 372 transitions, 6538 flow. Second operand 8 states and 235 transitions. [2024-02-02 09:15:42,547 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 407 transitions, 7454 flow [2024-02-02 09:15:42,756 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 407 transitions, 7391 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-02-02 09:15:42,761 INFO L231 Difference]: Finished difference. Result has 223 places, 372 transitions, 6578 flow [2024-02-02 09:15:42,762 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=6475, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=372, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=323, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6578, PETRI_PLACES=223, PETRI_TRANSITIONS=372} [2024-02-02 09:15:42,762 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 147 predicate places. [2024-02-02 09:15:42,762 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 372 transitions, 6578 flow [2024-02-02 09:15:42,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.625) internal successors, (157), 8 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:42,763 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:15:42,763 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:15:42,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-02-02 09:15:42,763 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 58 more)] === [2024-02-02 09:15:42,763 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:15:42,763 INFO L85 PathProgramCache]: Analyzing trace with hash -1744926902, now seen corresponding path program 4 times [2024-02-02 09:15:42,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:15:42,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762950881] [2024-02-02 09:15:42,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:15:42,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:15:42,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:15:42,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:15:42,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:15:42,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762950881] [2024-02-02 09:15:42,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762950881] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:15:42,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:15:42,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-02 09:15:42,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284021760] [2024-02-02 09:15:42,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:15:42,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-02 09:15:42,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:15:42,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-02 09:15:42,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-02-02 09:15:42,987 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 72 [2024-02-02 09:15:42,988 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 372 transitions, 6578 flow. Second operand has 8 states, 8 states have (on average 19.625) internal successors, (157), 8 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:42,988 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:15:42,988 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 72 [2024-02-02 09:15:42,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:15:44,058 INFO L124 PetriNetUnfolderBase]: 2724/5091 cut-off events. [2024-02-02 09:15:44,059 INFO L125 PetriNetUnfolderBase]: For 84703/85220 co-relation queries the response was YES. [2024-02-02 09:15:44,093 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30713 conditions, 5091 events. 2724/5091 cut-off events. For 84703/85220 co-relation queries the response was YES. Maximal size of possible extension queue 274. Compared 35354 event pairs, 871 based on Foata normal form. 83/5012 useless extension candidates. Maximal degree in co-relation 30619. Up to 4065 conditions per place. [2024-02-02 09:15:44,111 INFO L140 encePairwiseOnDemand]: 64/72 looper letters, 322 selfloop transitions, 49 changer transitions 0/406 dead transitions. [2024-02-02 09:15:44,111 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 406 transitions, 7541 flow [2024-02-02 09:15:44,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-02 09:15:44,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-02 09:15:44,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 231 transitions. [2024-02-02 09:15:44,112 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4010416666666667 [2024-02-02 09:15:44,112 INFO L175 Difference]: Start difference. First operand has 223 places, 372 transitions, 6578 flow. Second operand 8 states and 231 transitions. [2024-02-02 09:15:44,112 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 406 transitions, 7541 flow [2024-02-02 09:15:44,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 406 transitions, 7433 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-02-02 09:15:44,312 INFO L231 Difference]: Finished difference. Result has 226 places, 378 transitions, 6655 flow [2024-02-02 09:15:44,313 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=6480, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=372, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=328, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6655, PETRI_PLACES=226, PETRI_TRANSITIONS=378} [2024-02-02 09:15:44,313 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 150 predicate places. [2024-02-02 09:15:44,313 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 378 transitions, 6655 flow [2024-02-02 09:15:44,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.625) internal successors, (157), 8 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:44,313 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:15:44,313 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:15:44,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-02-02 09:15:44,314 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 58 more)] === [2024-02-02 09:15:44,314 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:15:44,314 INFO L85 PathProgramCache]: Analyzing trace with hash 755136939, now seen corresponding path program 1 times [2024-02-02 09:15:44,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:15:44,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046469055] [2024-02-02 09:15:44,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:15:44,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:15:44,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:15:44,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:15:44,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:15:44,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046469055] [2024-02-02 09:15:44,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046469055] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:15:44,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:15:44,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-02 09:15:44,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055584408] [2024-02-02 09:15:44,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:15:44,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-02 09:15:44,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:15:44,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-02 09:15:44,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-02-02 09:15:44,513 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 72 [2024-02-02 09:15:44,514 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 378 transitions, 6655 flow. Second operand has 8 states, 8 states have (on average 17.75) internal successors, (142), 8 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:44,514 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:15:44,514 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 72 [2024-02-02 09:15:44,514 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:15:45,615 INFO L124 PetriNetUnfolderBase]: 3092/5476 cut-off events. [2024-02-02 09:15:45,616 INFO L125 PetriNetUnfolderBase]: For 84118/84471 co-relation queries the response was YES. [2024-02-02 09:15:45,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32479 conditions, 5476 events. 3092/5476 cut-off events. For 84118/84471 co-relation queries the response was YES. Maximal size of possible extension queue 255. Compared 35761 event pairs, 721 based on Foata normal form. 35/5325 useless extension candidates. Maximal degree in co-relation 32383. Up to 2466 conditions per place. [2024-02-02 09:15:45,676 INFO L140 encePairwiseOnDemand]: 62/72 looper letters, 290 selfloop transitions, 126 changer transitions 0/437 dead transitions. [2024-02-02 09:15:45,676 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 437 transitions, 7951 flow [2024-02-02 09:15:45,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-02 09:15:45,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-02 09:15:45,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 240 transitions. [2024-02-02 09:15:45,677 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-02-02 09:15:45,677 INFO L175 Difference]: Start difference. First operand has 226 places, 378 transitions, 6655 flow. Second operand 8 states and 240 transitions. [2024-02-02 09:15:45,677 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 437 transitions, 7951 flow [2024-02-02 09:15:45,876 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 437 transitions, 7899 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-02 09:15:45,882 INFO L231 Difference]: Finished difference. Result has 232 places, 378 transitions, 6864 flow [2024-02-02 09:15:45,883 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=6603, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=378, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=126, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6864, PETRI_PLACES=232, PETRI_TRANSITIONS=378} [2024-02-02 09:15:45,883 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 156 predicate places. [2024-02-02 09:15:45,883 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 378 transitions, 6864 flow [2024-02-02 09:15:45,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.75) internal successors, (142), 8 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:45,884 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:15:45,884 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:15:45,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-02-02 09:15:45,884 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 58 more)] === [2024-02-02 09:15:45,884 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:15:45,884 INFO L85 PathProgramCache]: Analyzing trace with hash 1063903893, now seen corresponding path program 2 times [2024-02-02 09:15:45,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:15:45,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316444503] [2024-02-02 09:15:45,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:15:45,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:15:45,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:15:46,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:15:46,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:15:46,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316444503] [2024-02-02 09:15:46,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316444503] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:15:46,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:15:46,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-02 09:15:46,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464298893] [2024-02-02 09:15:46,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:15:46,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-02 09:15:46,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:15:46,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-02 09:15:46,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-02-02 09:15:46,112 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 72 [2024-02-02 09:15:46,113 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 378 transitions, 6864 flow. Second operand has 8 states, 8 states have (on average 17.75) internal successors, (142), 8 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:46,113 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:15:46,113 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 72 [2024-02-02 09:15:46,113 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:15:47,102 INFO L124 PetriNetUnfolderBase]: 3080/5455 cut-off events. [2024-02-02 09:15:47,102 INFO L125 PetriNetUnfolderBase]: For 90302/90652 co-relation queries the response was YES. [2024-02-02 09:15:47,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32945 conditions, 5455 events. 3080/5455 cut-off events. For 90302/90652 co-relation queries the response was YES. Maximal size of possible extension queue 253. Compared 35609 event pairs, 721 based on Foata normal form. 27/5292 useless extension candidates. Maximal degree in co-relation 32847. Up to 2466 conditions per place. [2024-02-02 09:15:47,168 INFO L140 encePairwiseOnDemand]: 63/72 looper letters, 288 selfloop transitions, 125 changer transitions 0/434 dead transitions. [2024-02-02 09:15:47,168 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 434 transitions, 8122 flow [2024-02-02 09:15:47,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-02 09:15:47,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-02 09:15:47,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 235 transitions. [2024-02-02 09:15:47,169 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4079861111111111 [2024-02-02 09:15:47,169 INFO L175 Difference]: Start difference. First operand has 232 places, 378 transitions, 6864 flow. Second operand 8 states and 235 transitions. [2024-02-02 09:15:47,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 434 transitions, 8122 flow [2024-02-02 09:15:47,384 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 434 transitions, 7929 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-02-02 09:15:47,390 INFO L231 Difference]: Finished difference. Result has 236 places, 378 transitions, 6928 flow [2024-02-02 09:15:47,391 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=6671, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=378, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6928, PETRI_PLACES=236, PETRI_TRANSITIONS=378} [2024-02-02 09:15:47,391 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 160 predicate places. [2024-02-02 09:15:47,391 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 378 transitions, 6928 flow [2024-02-02 09:15:47,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.75) internal successors, (142), 8 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:47,391 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:15:47,391 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:15:47,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-02-02 09:15:47,392 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 58 more)] === [2024-02-02 09:15:47,392 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:15:47,392 INFO L85 PathProgramCache]: Analyzing trace with hash -1827036704, now seen corresponding path program 2 times [2024-02-02 09:15:47,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:15:47,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516060167] [2024-02-02 09:15:47,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:15:47,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:15:47,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:15:47,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:15:47,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:15:47,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516060167] [2024-02-02 09:15:47,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516060167] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:15:47,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:15:47,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-02 09:15:47,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910212806] [2024-02-02 09:15:47,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:15:47,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-02 09:15:47,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:15:47,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-02 09:15:47,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-02-02 09:15:47,620 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 72 [2024-02-02 09:15:47,620 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 378 transitions, 6928 flow. Second operand has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 9 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:47,620 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:15:47,620 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 72 [2024-02-02 09:15:47,620 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:15:48,783 INFO L124 PetriNetUnfolderBase]: 3154/5569 cut-off events. [2024-02-02 09:15:48,783 INFO L125 PetriNetUnfolderBase]: For 94803/95151 co-relation queries the response was YES. [2024-02-02 09:15:48,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33641 conditions, 5569 events. 3154/5569 cut-off events. For 94803/95151 co-relation queries the response was YES. Maximal size of possible extension queue 256. Compared 36406 event pairs, 681 based on Foata normal form. 63/5451 useless extension candidates. Maximal degree in co-relation 33542. Up to 2497 conditions per place. [2024-02-02 09:15:48,830 INFO L140 encePairwiseOnDemand]: 59/72 looper letters, 258 selfloop transitions, 147 changer transitions 0/426 dead transitions. [2024-02-02 09:15:48,831 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 426 transitions, 8085 flow [2024-02-02 09:15:48,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-02 09:15:48,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-02 09:15:48,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 215 transitions. [2024-02-02 09:15:48,832 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42658730158730157 [2024-02-02 09:15:48,832 INFO L175 Difference]: Start difference. First operand has 236 places, 378 transitions, 6928 flow. Second operand 7 states and 215 transitions. [2024-02-02 09:15:48,832 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 426 transitions, 8085 flow [2024-02-02 09:15:49,054 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 426 transitions, 7896 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-02-02 09:15:49,060 INFO L231 Difference]: Finished difference. Result has 240 places, 387 transitions, 7225 flow [2024-02-02 09:15:49,060 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=6751, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=378, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=138, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7225, PETRI_PLACES=240, PETRI_TRANSITIONS=387} [2024-02-02 09:15:49,061 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 164 predicate places. [2024-02-02 09:15:49,061 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 387 transitions, 7225 flow [2024-02-02 09:15:49,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 9 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:49,061 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:15:49,061 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:15:49,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-02-02 09:15:49,062 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 58 more)] === [2024-02-02 09:15:49,062 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:15:49,062 INFO L85 PathProgramCache]: Analyzing trace with hash -914006838, now seen corresponding path program 3 times [2024-02-02 09:15:49,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:15:49,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50698639] [2024-02-02 09:15:49,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:15:49,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:15:49,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:15:49,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:15:49,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:15:49,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50698639] [2024-02-02 09:15:49,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50698639] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:15:49,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:15:49,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-02 09:15:49,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376150049] [2024-02-02 09:15:49,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:15:49,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-02 09:15:49,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:15:49,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-02 09:15:49,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-02-02 09:15:49,304 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 72 [2024-02-02 09:15:49,305 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 387 transitions, 7225 flow. Second operand has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 9 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:49,305 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:15:49,305 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 72 [2024-02-02 09:15:49,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:15:50,388 INFO L124 PetriNetUnfolderBase]: 3312/5855 cut-off events. [2024-02-02 09:15:50,389 INFO L125 PetriNetUnfolderBase]: For 104911/105267 co-relation queries the response was YES. [2024-02-02 09:15:50,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35861 conditions, 5855 events. 3312/5855 cut-off events. For 104911/105267 co-relation queries the response was YES. Maximal size of possible extension queue 266. Compared 38698 event pairs, 668 based on Foata normal form. 47/5721 useless extension candidates. Maximal degree in co-relation 35760. Up to 2528 conditions per place. [2024-02-02 09:15:50,453 INFO L140 encePairwiseOnDemand]: 61/72 looper letters, 239 selfloop transitions, 182 changer transitions 0/442 dead transitions. [2024-02-02 09:15:50,454 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 442 transitions, 8483 flow [2024-02-02 09:15:50,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-02 09:15:50,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-02 09:15:50,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 216 transitions. [2024-02-02 09:15:50,455 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-02-02 09:15:50,455 INFO L175 Difference]: Start difference. First operand has 240 places, 387 transitions, 7225 flow. Second operand 7 states and 216 transitions. [2024-02-02 09:15:50,455 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 442 transitions, 8483 flow [2024-02-02 09:15:50,687 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 442 transitions, 8334 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-02-02 09:15:50,694 INFO L231 Difference]: Finished difference. Result has 245 places, 402 transitions, 7731 flow [2024-02-02 09:15:50,694 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=7090, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=387, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=167, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7731, PETRI_PLACES=245, PETRI_TRANSITIONS=402} [2024-02-02 09:15:50,694 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 169 predicate places. [2024-02-02 09:15:50,694 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 402 transitions, 7731 flow [2024-02-02 09:15:50,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 9 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:50,695 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:15:50,695 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:15:50,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-02-02 09:15:50,695 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 58 more)] === [2024-02-02 09:15:50,695 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:15:50,696 INFO L85 PathProgramCache]: Analyzing trace with hash -912813648, now seen corresponding path program 4 times [2024-02-02 09:15:50,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:15:50,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299376716] [2024-02-02 09:15:50,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:15:50,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:15:50,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:15:50,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:15:50,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:15:50,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299376716] [2024-02-02 09:15:50,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299376716] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:15:50,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:15:50,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-02 09:15:50,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23954254] [2024-02-02 09:15:50,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:15:50,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-02 09:15:50,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:15:50,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-02 09:15:50,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-02-02 09:15:50,916 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 72 [2024-02-02 09:15:50,917 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 402 transitions, 7731 flow. Second operand has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 9 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:50,917 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:15:50,917 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 72 [2024-02-02 09:15:50,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:15:52,192 INFO L124 PetriNetUnfolderBase]: 3352/5927 cut-off events. [2024-02-02 09:15:52,193 INFO L125 PetriNetUnfolderBase]: For 113522/113846 co-relation queries the response was YES. [2024-02-02 09:15:52,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37451 conditions, 5927 events. 3352/5927 cut-off events. For 113522/113846 co-relation queries the response was YES. Maximal size of possible extension queue 263. Compared 39216 event pairs, 687 based on Foata normal form. 45/5799 useless extension candidates. Maximal degree in co-relation 37348. Up to 2552 conditions per place. [2024-02-02 09:15:52,246 INFO L140 encePairwiseOnDemand]: 61/72 looper letters, 234 selfloop transitions, 190 changer transitions 0/445 dead transitions. [2024-02-02 09:15:52,247 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 445 transitions, 8894 flow [2024-02-02 09:15:52,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-02 09:15:52,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-02 09:15:52,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 212 transitions. [2024-02-02 09:15:52,248 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42063492063492064 [2024-02-02 09:15:52,248 INFO L175 Difference]: Start difference. First operand has 245 places, 402 transitions, 7731 flow. Second operand 7 states and 212 transitions. [2024-02-02 09:15:52,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 445 transitions, 8894 flow [2024-02-02 09:15:52,473 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 445 transitions, 8555 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-02-02 09:15:52,480 INFO L231 Difference]: Finished difference. Result has 241 places, 409 transitions, 7928 flow [2024-02-02 09:15:52,480 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=7376, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=401, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=182, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7928, PETRI_PLACES=241, PETRI_TRANSITIONS=409} [2024-02-02 09:15:52,481 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 165 predicate places. [2024-02-02 09:15:52,482 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 409 transitions, 7928 flow [2024-02-02 09:15:52,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 9 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:52,482 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:15:52,482 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:15:52,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-02-02 09:15:52,482 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting P0Err9ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 58 more)] === [2024-02-02 09:15:52,482 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:15:52,483 INFO L85 PathProgramCache]: Analyzing trace with hash -556339357, now seen corresponding path program 2 times [2024-02-02 09:15:52,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:15:52,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422226224] [2024-02-02 09:15:52,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:15:52,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:15:52,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:15:52,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:15:52,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:15:52,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422226224] [2024-02-02 09:15:52,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422226224] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:15:52,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:15:52,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-02 09:15:52,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55208240] [2024-02-02 09:15:52,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:15:52,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-02 09:15:52,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:15:52,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-02 09:15:52,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-02-02 09:15:52,725 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 72 [2024-02-02 09:15:52,725 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 409 transitions, 7928 flow. Second operand has 8 states, 8 states have (on average 18.0) internal successors, (144), 8 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:52,726 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:15:52,726 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 72 [2024-02-02 09:15:52,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:15:53,885 INFO L124 PetriNetUnfolderBase]: 3474/6157 cut-off events. [2024-02-02 09:15:53,886 INFO L125 PetriNetUnfolderBase]: For 118372/118708 co-relation queries the response was YES. [2024-02-02 09:15:53,930 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39118 conditions, 6157 events. 3474/6157 cut-off events. For 118372/118708 co-relation queries the response was YES. Maximal size of possible extension queue 293. Compared 41240 event pairs, 873 based on Foata normal form. 63/6059 useless extension candidates. Maximal degree in co-relation 39021. Up to 3423 conditions per place. [2024-02-02 09:15:53,953 INFO L140 encePairwiseOnDemand]: 56/72 looper letters, 273 selfloop transitions, 163 changer transitions 0/457 dead transitions. [2024-02-02 09:15:53,953 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 457 transitions, 9197 flow [2024-02-02 09:15:53,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-02 09:15:53,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-02 09:15:53,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 223 transitions. [2024-02-02 09:15:53,954 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44246031746031744 [2024-02-02 09:15:53,954 INFO L175 Difference]: Start difference. First operand has 241 places, 409 transitions, 7928 flow. Second operand 7 states and 223 transitions. [2024-02-02 09:15:53,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 457 transitions, 9197 flow [2024-02-02 09:15:54,272 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 457 transitions, 8864 flow, removed 28 selfloop flow, removed 5 redundant places. [2024-02-02 09:15:54,278 INFO L231 Difference]: Finished difference. Result has 244 places, 416 transitions, 8128 flow [2024-02-02 09:15:54,279 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=7607, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=409, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=156, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=8128, PETRI_PLACES=244, PETRI_TRANSITIONS=416} [2024-02-02 09:15:54,279 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 168 predicate places. [2024-02-02 09:15:54,279 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 416 transitions, 8128 flow [2024-02-02 09:15:54,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.0) internal successors, (144), 8 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:54,279 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:15:54,279 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:15:54,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-02-02 09:15:54,280 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting P0Err9ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 58 more)] === [2024-02-02 09:15:54,280 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:15:54,280 INFO L85 PathProgramCache]: Analyzing trace with hash 1043445637, now seen corresponding path program 3 times [2024-02-02 09:15:54,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:15:54,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160674103] [2024-02-02 09:15:54,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:15:54,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:15:54,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:15:54,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:15:54,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:15:54,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160674103] [2024-02-02 09:15:54,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160674103] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:15:54,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:15:54,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-02 09:15:54,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937657356] [2024-02-02 09:15:54,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:15:54,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-02 09:15:54,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:15:54,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-02 09:15:54,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-02-02 09:15:54,479 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 72 [2024-02-02 09:15:54,480 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 416 transitions, 8128 flow. Second operand has 8 states, 8 states have (on average 18.0) internal successors, (144), 8 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:54,480 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:15:54,480 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 72 [2024-02-02 09:15:54,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:15:55,719 INFO L124 PetriNetUnfolderBase]: 3514/6239 cut-off events. [2024-02-02 09:15:55,719 INFO L125 PetriNetUnfolderBase]: For 117448/117786 co-relation queries the response was YES. [2024-02-02 09:15:55,753 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39622 conditions, 6239 events. 3514/6239 cut-off events. For 117448/117786 co-relation queries the response was YES. Maximal size of possible extension queue 305. Compared 41998 event pairs, 875 based on Foata normal form. 62/6139 useless extension candidates. Maximal degree in co-relation 39524. Up to 3447 conditions per place. [2024-02-02 09:15:55,772 INFO L140 encePairwiseOnDemand]: 56/72 looper letters, 273 selfloop transitions, 163 changer transitions 0/457 dead transitions. [2024-02-02 09:15:55,772 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 457 transitions, 9307 flow [2024-02-02 09:15:55,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-02 09:15:55,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-02 09:15:55,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 216 transitions. [2024-02-02 09:15:55,773 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-02-02 09:15:55,773 INFO L175 Difference]: Start difference. First operand has 244 places, 416 transitions, 8128 flow. Second operand 7 states and 216 transitions. [2024-02-02 09:15:55,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 457 transitions, 9307 flow [2024-02-02 09:15:55,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 457 transitions, 8954 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-02-02 09:15:55,998 INFO L231 Difference]: Finished difference. Result has 246 places, 420 transitions, 8170 flow [2024-02-02 09:15:55,998 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=7787, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=416, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=159, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=8170, PETRI_PLACES=246, PETRI_TRANSITIONS=420} [2024-02-02 09:15:55,999 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 170 predicate places. [2024-02-02 09:15:55,999 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 420 transitions, 8170 flow [2024-02-02 09:15:55,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.0) internal successors, (144), 8 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:55,999 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:15:55,999 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:15:55,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-02-02 09:15:56,000 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 58 more)] === [2024-02-02 09:15:56,000 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:15:56,000 INFO L85 PathProgramCache]: Analyzing trace with hash 1894657843, now seen corresponding path program 3 times [2024-02-02 09:15:56,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:15:56,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701282648] [2024-02-02 09:15:56,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:15:56,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:15:56,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:15:56,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:15:56,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:15:56,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701282648] [2024-02-02 09:15:56,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701282648] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:15:56,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:15:56,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-02 09:15:56,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620820755] [2024-02-02 09:15:56,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:15:56,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-02 09:15:56,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:15:56,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-02 09:15:56,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-02-02 09:15:56,187 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 72 [2024-02-02 09:15:56,188 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 420 transitions, 8170 flow. Second operand has 8 states, 8 states have (on average 17.75) internal successors, (142), 8 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:56,188 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:15:56,188 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 72 [2024-02-02 09:15:56,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:15:57,329 INFO L124 PetriNetUnfolderBase]: 3504/6234 cut-off events. [2024-02-02 09:15:57,329 INFO L125 PetriNetUnfolderBase]: For 116616/116979 co-relation queries the response was YES. [2024-02-02 09:15:57,371 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39460 conditions, 6234 events. 3504/6234 cut-off events. For 116616/116979 co-relation queries the response was YES. Maximal size of possible extension queue 306. Compared 42181 event pairs, 849 based on Foata normal form. 82/6152 useless extension candidates. Maximal degree in co-relation 39361. Up to 2814 conditions per place. [2024-02-02 09:15:57,393 INFO L140 encePairwiseOnDemand]: 59/72 looper letters, 275 selfloop transitions, 168 changer transitions 0/464 dead transitions. [2024-02-02 09:15:57,393 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 464 transitions, 9428 flow [2024-02-02 09:15:57,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-02 09:15:57,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-02 09:15:57,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 237 transitions. [2024-02-02 09:15:57,394 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4114583333333333 [2024-02-02 09:15:57,395 INFO L175 Difference]: Start difference. First operand has 246 places, 420 transitions, 8170 flow. Second operand 8 states and 237 transitions. [2024-02-02 09:15:57,395 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 464 transitions, 9428 flow [2024-02-02 09:15:57,633 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 464 transitions, 9258 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-02-02 09:15:57,640 INFO L231 Difference]: Finished difference. Result has 251 places, 420 transitions, 8350 flow [2024-02-02 09:15:57,640 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=8000, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=420, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=168, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8350, PETRI_PLACES=251, PETRI_TRANSITIONS=420} [2024-02-02 09:15:57,641 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 175 predicate places. [2024-02-02 09:15:57,641 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 420 transitions, 8350 flow [2024-02-02 09:15:57,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.75) internal successors, (142), 8 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:57,641 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:15:57,641 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:15:57,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-02-02 09:15:57,642 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 58 more)] === [2024-02-02 09:15:57,642 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:15:57,642 INFO L85 PathProgramCache]: Analyzing trace with hash 1895846383, now seen corresponding path program 4 times [2024-02-02 09:15:57,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:15:57,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935486424] [2024-02-02 09:15:57,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:15:57,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:15:57,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:15:57,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:15:57,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:15:57,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935486424] [2024-02-02 09:15:57,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935486424] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:15:57,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:15:57,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-02 09:15:57,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594193387] [2024-02-02 09:15:57,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:15:57,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-02 09:15:57,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:15:57,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-02 09:15:57,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-02-02 09:15:57,834 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 72 [2024-02-02 09:15:57,834 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 420 transitions, 8350 flow. Second operand has 8 states, 8 states have (on average 17.75) internal successors, (142), 8 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:57,834 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:15:57,834 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 72 [2024-02-02 09:15:57,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:15:59,164 INFO L124 PetriNetUnfolderBase]: 3528/6274 cut-off events. [2024-02-02 09:15:59,165 INFO L125 PetriNetUnfolderBase]: For 124219/124570 co-relation queries the response was YES. [2024-02-02 09:15:59,211 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39988 conditions, 6274 events. 3528/6274 cut-off events. For 124219/124570 co-relation queries the response was YES. Maximal size of possible extension queue 310. Compared 42492 event pairs, 849 based on Foata normal form. 66/6170 useless extension candidates. Maximal degree in co-relation 39888. Up to 2824 conditions per place. [2024-02-02 09:15:59,240 INFO L140 encePairwiseOnDemand]: 60/72 looper letters, 279 selfloop transitions, 166 changer transitions 0/466 dead transitions. [2024-02-02 09:15:59,240 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 466 transitions, 9657 flow [2024-02-02 09:15:59,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-02 09:15:59,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-02 09:15:59,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 235 transitions. [2024-02-02 09:15:59,241 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4079861111111111 [2024-02-02 09:15:59,241 INFO L175 Difference]: Start difference. First operand has 251 places, 420 transitions, 8350 flow. Second operand 8 states and 235 transitions. [2024-02-02 09:15:59,242 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 466 transitions, 9657 flow [2024-02-02 09:15:59,506 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 466 transitions, 9299 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-02-02 09:15:59,513 INFO L231 Difference]: Finished difference. Result has 251 places, 422 transitions, 8371 flow [2024-02-02 09:15:59,514 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=8000, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=420, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=164, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8371, PETRI_PLACES=251, PETRI_TRANSITIONS=422} [2024-02-02 09:15:59,514 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 175 predicate places. [2024-02-02 09:15:59,514 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 422 transitions, 8371 flow [2024-02-02 09:15:59,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.75) internal successors, (142), 8 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:59,515 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:15:59,515 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:15:59,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-02-02 09:15:59,515 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 58 more)] === [2024-02-02 09:15:59,515 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:15:59,516 INFO L85 PathProgramCache]: Analyzing trace with hash -4092481, now seen corresponding path program 5 times [2024-02-02 09:15:59,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:15:59,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753069764] [2024-02-02 09:15:59,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:15:59,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:15:59,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:15:59,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:15:59,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:15:59,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753069764] [2024-02-02 09:15:59,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753069764] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:15:59,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:15:59,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-02 09:15:59,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261977173] [2024-02-02 09:15:59,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:15:59,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-02 09:15:59,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:15:59,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-02 09:15:59,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-02-02 09:15:59,734 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 72 [2024-02-02 09:15:59,734 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 422 transitions, 8371 flow. Second operand has 8 states, 8 states have (on average 17.75) internal successors, (142), 8 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:59,734 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:15:59,734 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 72 [2024-02-02 09:15:59,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:16:01,064 INFO L124 PetriNetUnfolderBase]: 3552/6300 cut-off events. [2024-02-02 09:16:01,065 INFO L125 PetriNetUnfolderBase]: For 122664/123015 co-relation queries the response was YES. [2024-02-02 09:16:01,112 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40158 conditions, 6300 events. 3552/6300 cut-off events. For 122664/123015 co-relation queries the response was YES. Maximal size of possible extension queue 314. Compared 42602 event pairs, 817 based on Foata normal form. 50/6178 useless extension candidates. Maximal degree in co-relation 40058. Up to 2826 conditions per place. [2024-02-02 09:16:01,135 INFO L140 encePairwiseOnDemand]: 60/72 looper letters, 277 selfloop transitions, 171 changer transitions 0/469 dead transitions. [2024-02-02 09:16:01,135 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 469 transitions, 9690 flow [2024-02-02 09:16:01,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-02 09:16:01,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-02 09:16:01,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 230 transitions. [2024-02-02 09:16:01,136 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3993055555555556 [2024-02-02 09:16:01,136 INFO L175 Difference]: Start difference. First operand has 251 places, 422 transitions, 8371 flow. Second operand 8 states and 230 transitions. [2024-02-02 09:16:01,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 469 transitions, 9690 flow [2024-02-02 09:16:01,386 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 469 transitions, 9540 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-02-02 09:16:01,393 INFO L231 Difference]: Finished difference. Result has 257 places, 429 transitions, 8745 flow [2024-02-02 09:16:01,393 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=8227, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=422, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=164, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8745, PETRI_PLACES=257, PETRI_TRANSITIONS=429} [2024-02-02 09:16:01,393 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 181 predicate places. [2024-02-02 09:16:01,394 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 429 transitions, 8745 flow [2024-02-02 09:16:01,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.75) internal successors, (142), 8 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:16:01,394 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:16:01,394 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:16:01,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-02-02 09:16:01,394 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 58 more)] === [2024-02-02 09:16:01,394 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:16:01,395 INFO L85 PathProgramCache]: Analyzing trace with hash -1202193529, now seen corresponding path program 1 times [2024-02-02 09:16:01,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:16:01,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071703678] [2024-02-02 09:16:01,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:16:01,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:16:01,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:16:01,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:16:01,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:16:01,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071703678] [2024-02-02 09:16:01,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071703678] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:16:01,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:16:01,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-02 09:16:01,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942029208] [2024-02-02 09:16:01,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:16:01,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-02 09:16:01,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:16:01,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-02 09:16:01,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-02 09:16:01,462 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 72 [2024-02-02 09:16:01,463 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 429 transitions, 8745 flow. Second operand has 4 states, 4 states have (on average 31.5) internal successors, (126), 4 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:16:01,463 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:16:01,463 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 72 [2024-02-02 09:16:01,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:16:02,453 INFO L124 PetriNetUnfolderBase]: 2754/5308 cut-off events. [2024-02-02 09:16:02,453 INFO L125 PetriNetUnfolderBase]: For 136287/136989 co-relation queries the response was YES. [2024-02-02 09:16:02,491 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35789 conditions, 5308 events. 2754/5308 cut-off events. For 136287/136989 co-relation queries the response was YES. Maximal size of possible extension queue 317. Compared 39800 event pairs, 457 based on Foata normal form. 189/5186 useless extension candidates. Maximal degree in co-relation 35687. Up to 1813 conditions per place. [2024-02-02 09:16:02,511 INFO L140 encePairwiseOnDemand]: 67/72 looper letters, 306 selfloop transitions, 108 changer transitions 0/474 dead transitions. [2024-02-02 09:16:02,512 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 474 transitions, 10138 flow [2024-02-02 09:16:02,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-02 09:16:02,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-02 09:16:02,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 179 transitions. [2024-02-02 09:16:02,513 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6215277777777778 [2024-02-02 09:16:02,513 INFO L175 Difference]: Start difference. First operand has 257 places, 429 transitions, 8745 flow. Second operand 4 states and 179 transitions. [2024-02-02 09:16:02,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 474 transitions, 10138 flow [2024-02-02 09:16:02,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 474 transitions, 9856 flow, removed 17 selfloop flow, removed 6 redundant places. [2024-02-02 09:16:02,729 INFO L231 Difference]: Finished difference. Result has 255 places, 430 transitions, 8836 flow [2024-02-02 09:16:02,730 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=8499, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=429, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=321, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=8836, PETRI_PLACES=255, PETRI_TRANSITIONS=430} [2024-02-02 09:16:02,730 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 179 predicate places. [2024-02-02 09:16:02,730 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 430 transitions, 8836 flow [2024-02-02 09:16:02,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.5) internal successors, (126), 4 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:16:02,731 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:16:02,731 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:16:02,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-02-02 09:16:02,731 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 58 more)] === [2024-02-02 09:16:02,731 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:16:02,731 INFO L85 PathProgramCache]: Analyzing trace with hash -669176811, now seen corresponding path program 2 times [2024-02-02 09:16:02,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:16:02,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861275812] [2024-02-02 09:16:02,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:16:02,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:16:02,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:16:02,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:16:02,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:16:02,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861275812] [2024-02-02 09:16:02,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861275812] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:16:02,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:16:02,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-02 09:16:02,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654231222] [2024-02-02 09:16:02,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:16:02,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-02 09:16:02,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:16:02,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-02 09:16:02,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-02-02 09:16:02,791 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 72 [2024-02-02 09:16:02,791 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 430 transitions, 8836 flow. Second operand has 5 states, 5 states have (on average 30.8) internal successors, (154), 5 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:16:02,791 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:16:02,791 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 72 [2024-02-02 09:16:02,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:16:03,514 INFO L124 PetriNetUnfolderBase]: 1897/3719 cut-off events. [2024-02-02 09:16:03,515 INFO L125 PetriNetUnfolderBase]: For 125781/126183 co-relation queries the response was YES. [2024-02-02 09:16:03,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28729 conditions, 3719 events. 1897/3719 cut-off events. For 125781/126183 co-relation queries the response was YES. Maximal size of possible extension queue 289. Compared 27356 event pairs, 409 based on Foata normal form. 165/3627 useless extension candidates. Maximal degree in co-relation 28628. Up to 1494 conditions per place. [2024-02-02 09:16:03,552 INFO L140 encePairwiseOnDemand]: 67/72 looper letters, 280 selfloop transitions, 83 changer transitions 1/424 dead transitions. [2024-02-02 09:16:03,553 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 424 transitions, 9418 flow [2024-02-02 09:16:03,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-02 09:16:03,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-02 09:16:03,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 196 transitions. [2024-02-02 09:16:03,554 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5444444444444444 [2024-02-02 09:16:03,554 INFO L175 Difference]: Start difference. First operand has 255 places, 430 transitions, 8836 flow. Second operand 5 states and 196 transitions. [2024-02-02 09:16:03,554 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 424 transitions, 9418 flow [2024-02-02 09:16:03,810 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 424 transitions, 9260 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-02-02 09:16:03,816 INFO L231 Difference]: Finished difference. Result has 256 places, 411 transitions, 8706 flow [2024-02-02 09:16:03,816 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=8442, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=411, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=328, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=8706, PETRI_PLACES=256, PETRI_TRANSITIONS=411} [2024-02-02 09:16:03,817 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 180 predicate places. [2024-02-02 09:16:03,817 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 411 transitions, 8706 flow [2024-02-02 09:16:03,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.8) internal successors, (154), 5 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:16:03,817 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:16:03,817 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:16:03,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-02-02 09:16:03,817 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 58 more)] === [2024-02-02 09:16:03,818 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:16:03,818 INFO L85 PathProgramCache]: Analyzing trace with hash 2126464945, now seen corresponding path program 1 times [2024-02-02 09:16:03,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:16:03,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270309673] [2024-02-02 09:16:03,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:16:03,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:16:03,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:16:04,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:16:04,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:16:04,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270309673] [2024-02-02 09:16:04,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270309673] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:16:04,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:16:04,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-02 09:16:04,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829527715] [2024-02-02 09:16:04,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:16:04,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-02 09:16:04,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:16:04,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-02 09:16:04,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-02-02 09:16:04,052 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 72 [2024-02-02 09:16:04,053 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 411 transitions, 8706 flow. Second operand has 8 states, 8 states have (on average 19.875) internal successors, (159), 8 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:16:04,053 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:16:04,053 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 72 [2024-02-02 09:16:04,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:16:05,066 INFO L124 PetriNetUnfolderBase]: 2435/4644 cut-off events. [2024-02-02 09:16:05,066 INFO L125 PetriNetUnfolderBase]: For 140344/140841 co-relation queries the response was YES. [2024-02-02 09:16:05,100 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34559 conditions, 4644 events. 2435/4644 cut-off events. For 140344/140841 co-relation queries the response was YES. Maximal size of possible extension queue 318. Compared 33708 event pairs, 298 based on Foata normal form. 111/4619 useless extension candidates. Maximal degree in co-relation 34458. Up to 1693 conditions per place. [2024-02-02 09:16:05,134 INFO L140 encePairwiseOnDemand]: 59/72 looper letters, 347 selfloop transitions, 132 changer transitions 2/523 dead transitions. [2024-02-02 09:16:05,134 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 523 transitions, 10910 flow [2024-02-02 09:16:05,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-02 09:16:05,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-02 09:16:05,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 262 transitions. [2024-02-02 09:16:05,135 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4548611111111111 [2024-02-02 09:16:05,135 INFO L175 Difference]: Start difference. First operand has 256 places, 411 transitions, 8706 flow. Second operand 8 states and 262 transitions. [2024-02-02 09:16:05,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 523 transitions, 10910 flow [2024-02-02 09:16:05,584 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 523 transitions, 10659 flow, removed 13 selfloop flow, removed 3 redundant places. [2024-02-02 09:16:05,592 INFO L231 Difference]: Finished difference. Result has 261 places, 435 transitions, 9249 flow [2024-02-02 09:16:05,592 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=8534, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=411, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9249, PETRI_PLACES=261, PETRI_TRANSITIONS=435} [2024-02-02 09:16:05,592 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 185 predicate places. [2024-02-02 09:16:05,593 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 435 transitions, 9249 flow [2024-02-02 09:16:05,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.875) internal successors, (159), 8 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:16:05,593 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:16:05,593 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:16:05,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-02-02 09:16:05,593 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 58 more)] === [2024-02-02 09:16:05,593 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:16:05,594 INFO L85 PathProgramCache]: Analyzing trace with hash -1590153282, now seen corresponding path program 1 times [2024-02-02 09:16:05,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:16:05,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737309981] [2024-02-02 09:16:05,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:16:05,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:16:05,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:16:05,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:16:05,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:16:05,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737309981] [2024-02-02 09:16:05,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737309981] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:16:05,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:16:05,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-02 09:16:05,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150581539] [2024-02-02 09:16:05,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:16:05,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-02 09:16:05,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:16:05,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-02 09:16:05,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-02-02 09:16:05,936 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 72 [2024-02-02 09:16:05,937 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 435 transitions, 9249 flow. Second operand has 9 states, 9 states have (on average 19.666666666666668) internal successors, (177), 9 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:16:05,937 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:16:05,937 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 72 [2024-02-02 09:16:05,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:16:06,928 INFO L124 PetriNetUnfolderBase]: 2450/4688 cut-off events. [2024-02-02 09:16:06,928 INFO L125 PetriNetUnfolderBase]: For 144109/144567 co-relation queries the response was YES. [2024-02-02 09:16:06,966 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35480 conditions, 4688 events. 2450/4688 cut-off events. For 144109/144567 co-relation queries the response was YES. Maximal size of possible extension queue 322. Compared 33984 event pairs, 508 based on Foata normal form. 72/4616 useless extension candidates. Maximal degree in co-relation 35378. Up to 3770 conditions per place. [2024-02-02 09:16:06,985 INFO L140 encePairwiseOnDemand]: 65/72 looper letters, 371 selfloop transitions, 45 changer transitions 0/458 dead transitions. [2024-02-02 09:16:06,986 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 458 transitions, 10241 flow [2024-02-02 09:16:06,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-02 09:16:06,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-02 09:16:06,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 198 transitions. [2024-02-02 09:16:06,987 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39285714285714285 [2024-02-02 09:16:06,987 INFO L175 Difference]: Start difference. First operand has 261 places, 435 transitions, 9249 flow. Second operand 7 states and 198 transitions. [2024-02-02 09:16:06,987 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 458 transitions, 10241 flow [2024-02-02 09:16:07,422 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 458 transitions, 10038 flow, removed 15 selfloop flow, removed 5 redundant places. [2024-02-02 09:16:07,429 INFO L231 Difference]: Finished difference. Result has 264 places, 439 transitions, 9199 flow [2024-02-02 09:16:07,429 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=9049, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=435, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=393, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=9199, PETRI_PLACES=264, PETRI_TRANSITIONS=439} [2024-02-02 09:16:07,429 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 188 predicate places. [2024-02-02 09:16:07,429 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 439 transitions, 9199 flow [2024-02-02 09:16:07,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 19.666666666666668) internal successors, (177), 9 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:16:07,430 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:16:07,430 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:16:07,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-02-02 09:16:07,430 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 58 more)] === [2024-02-02 09:16:07,430 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:16:07,431 INFO L85 PathProgramCache]: Analyzing trace with hash 1037604444, now seen corresponding path program 2 times [2024-02-02 09:16:07,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:16:07,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387091683] [2024-02-02 09:16:07,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:16:07,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:16:07,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:16:07,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:16:07,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:16:07,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387091683] [2024-02-02 09:16:07,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387091683] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:16:07,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:16:07,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-02 09:16:07,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442804261] [2024-02-02 09:16:07,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:16:07,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-02 09:16:07,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:16:07,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-02 09:16:07,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-02-02 09:16:07,703 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 72 [2024-02-02 09:16:07,703 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 439 transitions, 9199 flow. Second operand has 9 states, 9 states have (on average 19.666666666666668) internal successors, (177), 9 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:16:07,704 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:16:07,704 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 72 [2024-02-02 09:16:07,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:16:08,711 INFO L124 PetriNetUnfolderBase]: 2490/4744 cut-off events. [2024-02-02 09:16:08,711 INFO L125 PetriNetUnfolderBase]: For 141095/141562 co-relation queries the response was YES. [2024-02-02 09:16:08,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35028 conditions, 4744 events. 2490/4744 cut-off events. For 141095/141562 co-relation queries the response was YES. Maximal size of possible extension queue 328. Compared 34323 event pairs, 500 based on Foata normal form. 78/4672 useless extension candidates. Maximal degree in co-relation 34925. Up to 3825 conditions per place. [2024-02-02 09:16:08,768 INFO L140 encePairwiseOnDemand]: 65/72 looper letters, 368 selfloop transitions, 50 changer transitions 0/460 dead transitions. [2024-02-02 09:16:08,768 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 460 transitions, 10142 flow [2024-02-02 09:16:08,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-02 09:16:08,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-02 09:16:08,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 198 transitions. [2024-02-02 09:16:08,769 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39285714285714285 [2024-02-02 09:16:08,769 INFO L175 Difference]: Start difference. First operand has 264 places, 439 transitions, 9199 flow. Second operand 7 states and 198 transitions. [2024-02-02 09:16:08,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 460 transitions, 10142 flow [2024-02-02 09:16:09,184 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 460 transitions, 10075 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-02-02 09:16:09,191 INFO L231 Difference]: Finished difference. Result has 267 places, 440 transitions, 9251 flow [2024-02-02 09:16:09,192 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=9137, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=439, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=390, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=9251, PETRI_PLACES=267, PETRI_TRANSITIONS=440} [2024-02-02 09:16:09,192 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 191 predicate places. [2024-02-02 09:16:09,192 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 440 transitions, 9251 flow [2024-02-02 09:16:09,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 19.666666666666668) internal successors, (177), 9 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:16:09,193 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:16:09,193 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:16:09,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-02-02 09:16:09,193 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 58 more)] === [2024-02-02 09:16:09,193 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:16:09,194 INFO L85 PathProgramCache]: Analyzing trace with hash 1037369154, now seen corresponding path program 3 times [2024-02-02 09:16:09,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:16:09,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075452888] [2024-02-02 09:16:09,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:16:09,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:16:09,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:16:09,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:16:09,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:16:09,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075452888] [2024-02-02 09:16:09,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075452888] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:16:09,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:16:09,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-02 09:16:09,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654168056] [2024-02-02 09:16:09,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:16:09,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-02 09:16:09,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:16:09,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-02 09:16:09,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-02-02 09:16:09,434 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 72 [2024-02-02 09:16:09,434 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 440 transitions, 9251 flow. Second operand has 9 states, 9 states have (on average 19.666666666666668) internal successors, (177), 9 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:16:09,434 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:16:09,434 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 72 [2024-02-02 09:16:09,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:16:10,371 INFO L124 PetriNetUnfolderBase]: 2488/4738 cut-off events. [2024-02-02 09:16:10,372 INFO L125 PetriNetUnfolderBase]: For 142165/142632 co-relation queries the response was YES. [2024-02-02 09:16:10,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34994 conditions, 4738 events. 2488/4738 cut-off events. For 142165/142632 co-relation queries the response was YES. Maximal size of possible extension queue 328. Compared 34241 event pairs, 500 based on Foata normal form. 78/4666 useless extension candidates. Maximal degree in co-relation 34892. Up to 3825 conditions per place. [2024-02-02 09:16:10,425 INFO L140 encePairwiseOnDemand]: 65/72 looper letters, 364 selfloop transitions, 54 changer transitions 0/460 dead transitions. [2024-02-02 09:16:10,425 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 460 transitions, 10168 flow [2024-02-02 09:16:10,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-02 09:16:10,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-02 09:16:10,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 198 transitions. [2024-02-02 09:16:10,426 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39285714285714285 [2024-02-02 09:16:10,426 INFO L175 Difference]: Start difference. First operand has 267 places, 440 transitions, 9251 flow. Second operand 7 states and 198 transitions. [2024-02-02 09:16:10,427 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 460 transitions, 10168 flow [2024-02-02 09:16:10,820 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 460 transitions, 10075 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-02-02 09:16:10,827 INFO L231 Difference]: Finished difference. Result has 268 places, 440 transitions, 9272 flow [2024-02-02 09:16:10,827 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=9158, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=440, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=386, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=9272, PETRI_PLACES=268, PETRI_TRANSITIONS=440} [2024-02-02 09:16:10,827 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 192 predicate places. [2024-02-02 09:16:10,827 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 440 transitions, 9272 flow [2024-02-02 09:16:10,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 19.666666666666668) internal successors, (177), 9 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:16:10,828 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:16:10,828 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:16:10,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-02-02 09:16:10,828 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 58 more)] === [2024-02-02 09:16:10,828 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:16:10,828 INFO L85 PathProgramCache]: Analyzing trace with hash -1757956684, now seen corresponding path program 1 times [2024-02-02 09:16:10,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:16:10,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850682504] [2024-02-02 09:16:10,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:16:10,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:16:10,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:16:10,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:16:10,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:16:10,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850682504] [2024-02-02 09:16:10,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850682504] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:16:10,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:16:10,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-02 09:16:10,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788048717] [2024-02-02 09:16:10,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:16:10,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-02 09:16:10,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:16:10,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-02 09:16:10,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-02-02 09:16:10,999 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 72 [2024-02-02 09:16:11,000 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 440 transitions, 9272 flow. Second operand has 7 states, 7 states have (on average 29.857142857142858) internal successors, (209), 7 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:16:11,000 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:16:11,000 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 72 [2024-02-02 09:16:11,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:16:11,891 INFO L124 PetriNetUnfolderBase]: 1929/3890 cut-off events. [2024-02-02 09:16:11,891 INFO L125 PetriNetUnfolderBase]: For 132218/132634 co-relation queries the response was YES. [2024-02-02 09:16:11,914 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29629 conditions, 3890 events. 1929/3890 cut-off events. For 132218/132634 co-relation queries the response was YES. Maximal size of possible extension queue 302. Compared 29476 event pairs, 343 based on Foata normal form. 58/3782 useless extension candidates. Maximal degree in co-relation 29530. Up to 1327 conditions per place. [2024-02-02 09:16:11,927 INFO L140 encePairwiseOnDemand]: 65/72 looper letters, 331 selfloop transitions, 116 changer transitions 2/509 dead transitions. [2024-02-02 09:16:11,927 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 509 transitions, 10926 flow [2024-02-02 09:16:11,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-02 09:16:11,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-02 09:16:11,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 249 transitions. [2024-02-02 09:16:11,928 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5763888888888888 [2024-02-02 09:16:11,928 INFO L175 Difference]: Start difference. First operand has 268 places, 440 transitions, 9272 flow. Second operand 6 states and 249 transitions. [2024-02-02 09:16:11,928 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 509 transitions, 10926 flow [2024-02-02 09:16:12,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 509 transitions, 10837 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-02-02 09:16:12,238 INFO L231 Difference]: Finished difference. Result has 270 places, 452 transitions, 9619 flow [2024-02-02 09:16:12,238 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=9183, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=440, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=329, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=9619, PETRI_PLACES=270, PETRI_TRANSITIONS=452} [2024-02-02 09:16:12,239 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 194 predicate places. [2024-02-02 09:16:12,239 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 452 transitions, 9619 flow [2024-02-02 09:16:12,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 29.857142857142858) internal successors, (209), 7 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:16:12,239 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:16:12,239 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:16:12,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-02-02 09:16:12,240 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 58 more)] === [2024-02-02 09:16:12,240 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:16:12,240 INFO L85 PathProgramCache]: Analyzing trace with hash -121485738, now seen corresponding path program 2 times [2024-02-02 09:16:12,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:16:12,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057869841] [2024-02-02 09:16:12,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:16:12,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:16:12,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:16:12,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:16:12,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:16:12,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057869841] [2024-02-02 09:16:12,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057869841] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:16:12,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:16:12,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-02 09:16:12,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104709295] [2024-02-02 09:16:12,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:16:12,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-02 09:16:12,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:16:12,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-02 09:16:12,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-02-02 09:16:12,469 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 72 [2024-02-02 09:16:12,469 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 452 transitions, 9619 flow. Second operand has 8 states, 8 states have (on average 29.625) internal successors, (237), 8 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:16:12,469 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:16:12,470 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 72 [2024-02-02 09:16:12,470 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:16:13,290 INFO L124 PetriNetUnfolderBase]: 1917/3912 cut-off events. [2024-02-02 09:16:13,290 INFO L125 PetriNetUnfolderBase]: For 134807/135186 co-relation queries the response was YES. [2024-02-02 09:16:13,319 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30256 conditions, 3912 events. 1917/3912 cut-off events. For 134807/135186 co-relation queries the response was YES. Maximal size of possible extension queue 302. Compared 29686 event pairs, 325 based on Foata normal form. 42/3832 useless extension candidates. Maximal degree in co-relation 30157. Up to 2863 conditions per place. [2024-02-02 09:16:13,336 INFO L140 encePairwiseOnDemand]: 64/72 looper letters, 356 selfloop transitions, 59 changer transitions 0/475 dead transitions. [2024-02-02 09:16:13,336 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 475 transitions, 10575 flow [2024-02-02 09:16:13,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-02 09:16:13,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-02 09:16:13,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 293 transitions. [2024-02-02 09:16:13,337 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5086805555555556 [2024-02-02 09:16:13,337 INFO L175 Difference]: Start difference. First operand has 270 places, 452 transitions, 9619 flow. Second operand 8 states and 293 transitions. [2024-02-02 09:16:13,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 475 transitions, 10575 flow [2024-02-02 09:16:13,721 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 475 transitions, 10493 flow, removed 8 selfloop flow, removed 1 redundant places. [2024-02-02 09:16:13,728 INFO L231 Difference]: Finished difference. Result has 277 places, 452 transitions, 9663 flow [2024-02-02 09:16:13,729 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=9537, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=452, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=393, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9663, PETRI_PLACES=277, PETRI_TRANSITIONS=452} [2024-02-02 09:16:13,729 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 201 predicate places. [2024-02-02 09:16:13,729 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 452 transitions, 9663 flow [2024-02-02 09:16:13,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 29.625) internal successors, (237), 8 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:16:13,730 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:16:13,730 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:16:13,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-02-02 09:16:13,730 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 58 more)] === [2024-02-02 09:16:13,730 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:16:13,730 INFO L85 PathProgramCache]: Analyzing trace with hash -1618492869, now seen corresponding path program 1 times [2024-02-02 09:16:13,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:16:13,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956352794] [2024-02-02 09:16:13,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:16:13,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:16:13,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:16:13,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:16:13,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:16:13,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956352794] [2024-02-02 09:16:13,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956352794] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:16:13,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:16:13,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-02 09:16:13,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585799880] [2024-02-02 09:16:13,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:16:13,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-02 09:16:13,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:16:13,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-02 09:16:13,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-02-02 09:16:14,016 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 72 [2024-02-02 09:16:14,016 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 452 transitions, 9663 flow. Second operand has 9 states, 9 states have (on average 17.77777777777778) internal successors, (160), 9 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:16:14,016 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:16:14,016 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 72 [2024-02-02 09:16:14,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:16:15,101 INFO L124 PetriNetUnfolderBase]: 2665/4847 cut-off events. [2024-02-02 09:16:15,101 INFO L125 PetriNetUnfolderBase]: For 139109/139512 co-relation queries the response was YES. [2024-02-02 09:16:15,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36205 conditions, 4847 events. 2665/4847 cut-off events. For 139109/139512 co-relation queries the response was YES. Maximal size of possible extension queue 326. Compared 33596 event pairs, 407 based on Foata normal form. 41/4743 useless extension candidates. Maximal degree in co-relation 36103. Up to 2325 conditions per place. [2024-02-02 09:16:15,164 INFO L140 encePairwiseOnDemand]: 61/72 looper letters, 352 selfloop transitions, 135 changer transitions 0/508 dead transitions. [2024-02-02 09:16:15,164 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 508 transitions, 11223 flow [2024-02-02 09:16:15,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-02 09:16:15,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-02 09:16:15,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 227 transitions. [2024-02-02 09:16:15,165 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3940972222222222 [2024-02-02 09:16:15,165 INFO L175 Difference]: Start difference. First operand has 277 places, 452 transitions, 9663 flow. Second operand 8 states and 227 transitions. [2024-02-02 09:16:15,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 508 transitions, 11223 flow [2024-02-02 09:16:15,588 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 508 transitions, 11103 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-02-02 09:16:15,596 INFO L231 Difference]: Finished difference. Result has 279 places, 453 transitions, 9836 flow [2024-02-02 09:16:15,596 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=9543, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=452, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=134, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=318, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9836, PETRI_PLACES=279, PETRI_TRANSITIONS=453} [2024-02-02 09:16:15,596 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 203 predicate places. [2024-02-02 09:16:15,597 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 453 transitions, 9836 flow [2024-02-02 09:16:15,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.77777777777778) internal successors, (160), 9 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:16:15,597 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:16:15,597 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:16:15,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-02-02 09:16:15,597 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 58 more)] === [2024-02-02 09:16:15,597 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:16:15,598 INFO L85 PathProgramCache]: Analyzing trace with hash 1846813316, now seen corresponding path program 4 times [2024-02-02 09:16:15,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:16:15,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407309322] [2024-02-02 09:16:15,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:16:15,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:16:15,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:16:15,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:16:15,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:16:15,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407309322] [2024-02-02 09:16:15,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407309322] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:16:15,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:16:15,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-02 09:16:15,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326301349] [2024-02-02 09:16:15,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:16:15,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-02 09:16:15,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:16:15,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-02 09:16:15,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-02-02 09:16:15,844 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 72 [2024-02-02 09:16:15,845 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 453 transitions, 9836 flow. Second operand has 9 states, 9 states have (on average 19.666666666666668) internal successors, (177), 9 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:16:15,845 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:16:15,845 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 72 [2024-02-02 09:16:15,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:16:16,900 INFO L124 PetriNetUnfolderBase]: 2465/4702 cut-off events. [2024-02-02 09:16:16,901 INFO L125 PetriNetUnfolderBase]: For 155739/156243 co-relation queries the response was YES. [2024-02-02 09:16:16,933 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35916 conditions, 4702 events. 2465/4702 cut-off events. For 155739/156243 co-relation queries the response was YES. Maximal size of possible extension queue 330. Compared 34216 event pairs, 547 based on Foata normal form. 75/4629 useless extension candidates. Maximal degree in co-relation 35813. Up to 3806 conditions per place. [2024-02-02 09:16:16,954 INFO L140 encePairwiseOnDemand]: 62/72 looper letters, 374 selfloop transitions, 60 changer transitions 0/476 dead transitions. [2024-02-02 09:16:16,954 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 476 transitions, 10929 flow [2024-02-02 09:16:16,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-02 09:16:16,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-02 09:16:16,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 221 transitions. [2024-02-02 09:16:16,955 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3836805555555556 [2024-02-02 09:16:16,955 INFO L175 Difference]: Start difference. First operand has 279 places, 453 transitions, 9836 flow. Second operand 8 states and 221 transitions. [2024-02-02 09:16:16,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 476 transitions, 10929 flow [2024-02-02 09:16:17,348 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 476 transitions, 10580 flow, removed 1 selfloop flow, removed 13 redundant places. [2024-02-02 09:16:17,356 INFO L231 Difference]: Finished difference. Result has 273 places, 460 transitions, 9771 flow [2024-02-02 09:16:17,356 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=9487, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=452, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=398, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9771, PETRI_PLACES=273, PETRI_TRANSITIONS=460} [2024-02-02 09:16:17,357 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 197 predicate places. [2024-02-02 09:16:17,357 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 460 transitions, 9771 flow [2024-02-02 09:16:17,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 19.666666666666668) internal successors, (177), 9 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:16:17,357 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:16:17,357 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:16:17,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-02-02 09:16:17,358 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 58 more)] === [2024-02-02 09:16:17,358 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:16:17,358 INFO L85 PathProgramCache]: Analyzing trace with hash 314330379, now seen corresponding path program 2 times [2024-02-02 09:16:17,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:16:17,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502336465] [2024-02-02 09:16:17,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:16:17,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:16:17,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:16:17,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:16:17,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:16:17,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502336465] [2024-02-02 09:16:17,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502336465] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:16:17,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:16:17,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-02 09:16:17,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610413182] [2024-02-02 09:16:17,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:16:17,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-02 09:16:17,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:16:17,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-02 09:16:17,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-02-02 09:16:17,619 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 72 [2024-02-02 09:16:17,619 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 460 transitions, 9771 flow. Second operand has 9 states, 9 states have (on average 17.77777777777778) internal successors, (160), 9 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:16:17,620 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:16:17,620 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 72 [2024-02-02 09:16:17,620 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:16:18,726 INFO L124 PetriNetUnfolderBase]: 2663/4839 cut-off events. [2024-02-02 09:16:18,727 INFO L125 PetriNetUnfolderBase]: For 139439/139826 co-relation queries the response was YES. [2024-02-02 09:16:18,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36104 conditions, 4839 events. 2663/4839 cut-off events. For 139439/139826 co-relation queries the response was YES. Maximal size of possible extension queue 325. Compared 33487 event pairs, 417 based on Foata normal form. 29/4719 useless extension candidates. Maximal degree in co-relation 36007. Up to 2321 conditions per place. [2024-02-02 09:16:18,783 INFO L140 encePairwiseOnDemand]: 61/72 looper letters, 352 selfloop transitions, 139 changer transitions 0/512 dead transitions. [2024-02-02 09:16:18,784 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 512 transitions, 11289 flow [2024-02-02 09:16:18,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-02 09:16:18,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-02 09:16:18,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 221 transitions. [2024-02-02 09:16:18,785 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3836805555555556 [2024-02-02 09:16:18,785 INFO L175 Difference]: Start difference. First operand has 273 places, 460 transitions, 9771 flow. Second operand 8 states and 221 transitions. [2024-02-02 09:16:18,785 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 512 transitions, 11289 flow [2024-02-02 09:16:19,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 512 transitions, 11194 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-02-02 09:16:19,228 INFO L231 Difference]: Finished difference. Result has 277 places, 460 transitions, 9962 flow [2024-02-02 09:16:19,229 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=9676, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=460, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=139, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=321, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9962, PETRI_PLACES=277, PETRI_TRANSITIONS=460} [2024-02-02 09:16:19,229 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 201 predicate places. [2024-02-02 09:16:19,229 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 460 transitions, 9962 flow [2024-02-02 09:16:19,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.77777777777778) internal successors, (160), 9 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:16:19,229 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:16:19,230 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:16:19,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-02-02 09:16:19,230 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 58 more)] === [2024-02-02 09:16:19,230 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:16:19,230 INFO L85 PathProgramCache]: Analyzing trace with hash 483491667, now seen corresponding path program 2 times [2024-02-02 09:16:19,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:16:19,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543769027] [2024-02-02 09:16:19,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:16:19,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:16:19,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:16:19,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:16:19,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:16:19,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543769027] [2024-02-02 09:16:19,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543769027] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:16:19,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:16:19,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-02 09:16:19,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126035093] [2024-02-02 09:16:19,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:16:19,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-02 09:16:19,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:16:19,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-02 09:16:19,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-02-02 09:16:19,475 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 72 [2024-02-02 09:16:19,475 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 460 transitions, 9962 flow. Second operand has 8 states, 8 states have (on average 19.875) internal successors, (159), 8 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:16:19,476 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:16:19,476 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 72 [2024-02-02 09:16:19,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:16:20,541 INFO L124 PetriNetUnfolderBase]: 2573/4895 cut-off events. [2024-02-02 09:16:20,541 INFO L125 PetriNetUnfolderBase]: For 159759/160287 co-relation queries the response was YES. [2024-02-02 09:16:20,579 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37012 conditions, 4895 events. 2573/4895 cut-off events. For 159759/160287 co-relation queries the response was YES. Maximal size of possible extension queue 339. Compared 35469 event pairs, 508 based on Foata normal form. 80/4822 useless extension candidates. Maximal degree in co-relation 36914. Up to 1767 conditions per place. [2024-02-02 09:16:20,599 INFO L140 encePairwiseOnDemand]: 57/72 looper letters, 370 selfloop transitions, 150 changer transitions 2/564 dead transitions. [2024-02-02 09:16:20,599 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 564 transitions, 12062 flow [2024-02-02 09:16:20,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-02 09:16:20,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-02 09:16:20,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 261 transitions. [2024-02-02 09:16:20,600 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.453125 [2024-02-02 09:16:20,601 INFO L175 Difference]: Start difference. First operand has 277 places, 460 transitions, 9962 flow. Second operand 8 states and 261 transitions. [2024-02-02 09:16:20,601 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 564 transitions, 12062 flow [2024-02-02 09:16:21,070 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 564 transitions, 11751 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-02-02 09:16:21,078 INFO L231 Difference]: Finished difference. Result has 279 places, 487 transitions, 10320 flow [2024-02-02 09:16:21,079 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=9659, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=460, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=323, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=10320, PETRI_PLACES=279, PETRI_TRANSITIONS=487} [2024-02-02 09:16:21,079 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 203 predicate places. [2024-02-02 09:16:21,079 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 487 transitions, 10320 flow [2024-02-02 09:16:21,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.875) internal successors, (159), 8 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:16:21,080 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:16:21,080 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:16:21,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-02-02 09:16:21,080 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 58 more)] === [2024-02-02 09:16:21,080 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:16:21,080 INFO L85 PathProgramCache]: Analyzing trace with hash 2136488487, now seen corresponding path program 3 times [2024-02-02 09:16:21,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:16:21,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331755436] [2024-02-02 09:16:21,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:16:21,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:16:21,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:16:21,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:16:21,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:16:21,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331755436] [2024-02-02 09:16:21,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331755436] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:16:21,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:16:21,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-02 09:16:21,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828321180] [2024-02-02 09:16:21,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:16:21,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-02 09:16:21,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:16:21,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-02 09:16:21,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-02-02 09:16:21,339 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 72 [2024-02-02 09:16:21,340 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 487 transitions, 10320 flow. Second operand has 8 states, 8 states have (on average 19.875) internal successors, (159), 8 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:16:21,340 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:16:21,340 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 72 [2024-02-02 09:16:21,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:16:22,456 INFO L124 PetriNetUnfolderBase]: 2604/4966 cut-off events. [2024-02-02 09:16:22,457 INFO L125 PetriNetUnfolderBase]: For 159828/160375 co-relation queries the response was YES. [2024-02-02 09:16:22,501 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38911 conditions, 4966 events. 2604/4966 cut-off events. For 159828/160375 co-relation queries the response was YES. Maximal size of possible extension queue 340. Compared 36135 event pairs, 513 based on Foata normal form. 80/4893 useless extension candidates. Maximal degree in co-relation 38811. Up to 1780 conditions per place. [2024-02-02 09:16:22,519 INFO L140 encePairwiseOnDemand]: 55/72 looper letters, 357 selfloop transitions, 180 changer transitions 2/581 dead transitions. [2024-02-02 09:16:22,520 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 581 transitions, 12487 flow [2024-02-02 09:16:22,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-02 09:16:22,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-02 09:16:22,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 269 transitions. [2024-02-02 09:16:22,521 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4670138888888889 [2024-02-02 09:16:22,521 INFO L175 Difference]: Start difference. First operand has 279 places, 487 transitions, 10320 flow. Second operand 8 states and 269 transitions. [2024-02-02 09:16:22,521 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 581 transitions, 12487 flow [2024-02-02 09:16:22,973 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 581 transitions, 12314 flow, removed 8 selfloop flow, removed 2 redundant places. [2024-02-02 09:16:22,981 INFO L231 Difference]: Finished difference. Result has 286 places, 507 transitions, 10874 flow [2024-02-02 09:16:22,982 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=10154, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=487, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=160, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=314, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=10874, PETRI_PLACES=286, PETRI_TRANSITIONS=507} [2024-02-02 09:16:22,982 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 210 predicate places. [2024-02-02 09:16:22,982 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 507 transitions, 10874 flow [2024-02-02 09:16:22,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.875) internal successors, (159), 8 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:16:22,982 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:16:22,983 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:16:22,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-02-02 09:16:22,983 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 58 more)] === [2024-02-02 09:16:22,983 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:16:22,983 INFO L85 PathProgramCache]: Analyzing trace with hash 2136248547, now seen corresponding path program 4 times [2024-02-02 09:16:22,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:16:22,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931786346] [2024-02-02 09:16:22,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:16:22,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:16:22,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:16:23,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:16:23,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:16:23,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931786346] [2024-02-02 09:16:23,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931786346] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:16:23,187 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:16:23,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-02 09:16:23,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094936730] [2024-02-02 09:16:23,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:16:23,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-02 09:16:23,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:16:23,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-02 09:16:23,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-02-02 09:16:23,221 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 72 [2024-02-02 09:16:23,221 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 507 transitions, 10874 flow. Second operand has 8 states, 8 states have (on average 19.875) internal successors, (159), 8 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:16:23,221 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:16:23,221 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 72 [2024-02-02 09:16:23,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:16:24,359 INFO L124 PetriNetUnfolderBase]: 2640/5034 cut-off events. [2024-02-02 09:16:24,359 INFO L125 PetriNetUnfolderBase]: For 166649/167197 co-relation queries the response was YES. [2024-02-02 09:16:24,397 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40508 conditions, 5034 events. 2640/5034 cut-off events. For 166649/167197 co-relation queries the response was YES. Maximal size of possible extension queue 344. Compared 36618 event pairs, 516 based on Foata normal form. 80/4961 useless extension candidates. Maximal degree in co-relation 40406. Up to 1792 conditions per place. [2024-02-02 09:16:24,418 INFO L140 encePairwiseOnDemand]: 55/72 looper letters, 358 selfloop transitions, 191 changer transitions 2/593 dead transitions. [2024-02-02 09:16:24,419 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 593 transitions, 12988 flow [2024-02-02 09:16:24,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-02 09:16:24,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-02 09:16:24,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 277 transitions. [2024-02-02 09:16:24,420 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4809027777777778 [2024-02-02 09:16:24,420 INFO L175 Difference]: Start difference. First operand has 286 places, 507 transitions, 10874 flow. Second operand 8 states and 277 transitions. [2024-02-02 09:16:24,420 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 593 transitions, 12988 flow [2024-02-02 09:16:24,862 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 593 transitions, 12678 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-02-02 09:16:24,873 INFO L231 Difference]: Finished difference. Result has 289 places, 513 transitions, 11099 flow [2024-02-02 09:16:24,873 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=10572, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=507, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=185, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=320, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=11099, PETRI_PLACES=289, PETRI_TRANSITIONS=513} [2024-02-02 09:16:24,874 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 213 predicate places. [2024-02-02 09:16:24,874 INFO L495 AbstractCegarLoop]: Abstraction has has 289 places, 513 transitions, 11099 flow [2024-02-02 09:16:24,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.875) internal successors, (159), 8 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:16:24,874 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:16:24,874 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:16:24,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-02-02 09:16:24,874 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 58 more)] === [2024-02-02 09:16:24,875 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:16:24,875 INFO L85 PathProgramCache]: Analyzing trace with hash 1080453299, now seen corresponding path program 5 times [2024-02-02 09:16:24,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:16:24,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143450958] [2024-02-02 09:16:24,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:16:24,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:16:24,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:16:25,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:16:25,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:16:25,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143450958] [2024-02-02 09:16:25,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143450958] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:16:25,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:16:25,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-02 09:16:25,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347924603] [2024-02-02 09:16:25,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:16:25,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-02 09:16:25,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:16:25,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-02 09:16:25,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-02-02 09:16:25,111 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 72 [2024-02-02 09:16:25,112 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 513 transitions, 11099 flow. Second operand has 8 states, 8 states have (on average 19.875) internal successors, (159), 8 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:16:25,112 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:16:25,112 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 72 [2024-02-02 09:16:25,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:16:26,334 INFO L124 PetriNetUnfolderBase]: 2709/5137 cut-off events. [2024-02-02 09:16:26,334 INFO L125 PetriNetUnfolderBase]: For 170571/171149 co-relation queries the response was YES. [2024-02-02 09:16:26,372 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41563 conditions, 5137 events. 2709/5137 cut-off events. For 170571/171149 co-relation queries the response was YES. Maximal size of possible extension queue 350. Compared 37364 event pairs, 497 based on Foata normal form. 84/5064 useless extension candidates. Maximal degree in co-relation 41460. Up to 1819 conditions per place. [2024-02-02 09:16:26,392 INFO L140 encePairwiseOnDemand]: 58/72 looper letters, 370 selfloop transitions, 176 changer transitions 2/590 dead transitions. [2024-02-02 09:16:26,393 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 590 transitions, 12995 flow [2024-02-02 09:16:26,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-02 09:16:26,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-02 09:16:26,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 241 transitions. [2024-02-02 09:16:26,394 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4781746031746032 [2024-02-02 09:16:26,394 INFO L175 Difference]: Start difference. First operand has 289 places, 513 transitions, 11099 flow. Second operand 7 states and 241 transitions. [2024-02-02 09:16:26,394 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 590 transitions, 12995 flow [2024-02-02 09:16:26,866 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 590 transitions, 12777 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-02-02 09:16:26,874 INFO L231 Difference]: Finished difference. Result has 295 places, 525 transitions, 11522 flow [2024-02-02 09:16:26,875 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=10887, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=513, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=164, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=343, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=11522, PETRI_PLACES=295, PETRI_TRANSITIONS=525} [2024-02-02 09:16:26,875 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 219 predicate places. [2024-02-02 09:16:26,875 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 525 transitions, 11522 flow [2024-02-02 09:16:26,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.875) internal successors, (159), 8 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:16:26,875 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:16:26,876 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:16:26,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-02-02 09:16:26,876 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 58 more)] === [2024-02-02 09:16:26,876 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:16:26,876 INFO L85 PathProgramCache]: Analyzing trace with hash 1191189583, now seen corresponding path program 3 times [2024-02-02 09:16:26,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:16:26,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674714610] [2024-02-02 09:16:26,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:16:26,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:16:26,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:16:27,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:16:27,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:16:27,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674714610] [2024-02-02 09:16:27,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674714610] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:16:27,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:16:27,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-02 09:16:27,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624731569] [2024-02-02 09:16:27,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:16:27,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-02 09:16:27,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:16:27,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-02 09:16:27,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-02-02 09:16:27,113 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 72 [2024-02-02 09:16:27,114 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 525 transitions, 11522 flow. Second operand has 9 states, 9 states have (on average 17.77777777777778) internal successors, (160), 9 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:16:27,114 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:16:27,114 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 72 [2024-02-02 09:16:27,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:16:28,324 INFO L124 PetriNetUnfolderBase]: 2899/5285 cut-off events. [2024-02-02 09:16:28,324 INFO L125 PetriNetUnfolderBase]: For 173976/174645 co-relation queries the response was YES. [2024-02-02 09:16:28,371 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44381 conditions, 5285 events. 2899/5285 cut-off events. For 173976/174645 co-relation queries the response was YES. Maximal size of possible extension queue 350. Compared 36857 event pairs, 394 based on Foata normal form. 79/5208 useless extension candidates. Maximal degree in co-relation 44274. Up to 2664 conditions per place. [2024-02-02 09:16:28,396 INFO L140 encePairwiseOnDemand]: 60/72 looper letters, 351 selfloop transitions, 169 changer transitions 0/552 dead transitions. [2024-02-02 09:16:28,396 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 552 transitions, 12826 flow [2024-02-02 09:16:28,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-02 09:16:28,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-02 09:16:28,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 198 transitions. [2024-02-02 09:16:28,397 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39285714285714285 [2024-02-02 09:16:28,397 INFO L175 Difference]: Start difference. First operand has 295 places, 525 transitions, 11522 flow. Second operand 7 states and 198 transitions. [2024-02-02 09:16:28,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 552 transitions, 12826 flow [2024-02-02 09:16:28,902 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 552 transitions, 12545 flow, removed 18 selfloop flow, removed 5 redundant places. [2024-02-02 09:16:28,910 INFO L231 Difference]: Finished difference. Result has 297 places, 526 transitions, 11611 flow [2024-02-02 09:16:28,911 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=11241, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=525, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=168, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=357, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=11611, PETRI_PLACES=297, PETRI_TRANSITIONS=526} [2024-02-02 09:16:28,911 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 221 predicate places. [2024-02-02 09:16:28,911 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 526 transitions, 11611 flow [2024-02-02 09:16:28,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.77777777777778) internal successors, (160), 9 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:16:28,912 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:16:28,912 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:16:28,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-02-02 09:16:28,912 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 58 more)] === [2024-02-02 09:16:28,912 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:16:28,912 INFO L85 PathProgramCache]: Analyzing trace with hash -1255606339, now seen corresponding path program 4 times [2024-02-02 09:16:28,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:16:28,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52997266] [2024-02-02 09:16:28,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:16:28,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:16:28,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:16:29,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:16:29,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:16:29,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52997266] [2024-02-02 09:16:29,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52997266] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:16:29,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:16:29,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-02 09:16:29,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005553887] [2024-02-02 09:16:29,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:16:29,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-02 09:16:29,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:16:29,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-02 09:16:29,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-02-02 09:16:29,142 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 72 [2024-02-02 09:16:29,142 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 526 transitions, 11611 flow. Second operand has 9 states, 9 states have (on average 17.77777777777778) internal successors, (160), 9 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:16:29,142 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:16:29,142 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 72 [2024-02-02 09:16:29,142 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:16:30,461 INFO L124 PetriNetUnfolderBase]: 2907/5309 cut-off events. [2024-02-02 09:16:30,461 INFO L125 PetriNetUnfolderBase]: For 176784/177418 co-relation queries the response was YES. [2024-02-02 09:16:30,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44249 conditions, 5309 events. 2907/5309 cut-off events. For 176784/177418 co-relation queries the response was YES. Maximal size of possible extension queue 354. Compared 37149 event pairs, 408 based on Foata normal form. 47/5194 useless extension candidates. Maximal degree in co-relation 44142. Up to 2668 conditions per place. [2024-02-02 09:16:30,515 INFO L140 encePairwiseOnDemand]: 61/72 looper letters, 359 selfloop transitions, 164 changer transitions 0/555 dead transitions. [2024-02-02 09:16:30,516 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 555 transitions, 12958 flow [2024-02-02 09:16:30,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-02 09:16:30,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-02 09:16:30,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 196 transitions. [2024-02-02 09:16:30,517 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3888888888888889 [2024-02-02 09:16:30,517 INFO L175 Difference]: Start difference. First operand has 297 places, 526 transitions, 11611 flow. Second operand 7 states and 196 transitions. [2024-02-02 09:16:30,517 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 555 transitions, 12958 flow [2024-02-02 09:16:30,957 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 555 transitions, 12585 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-02-02 09:16:30,966 INFO L231 Difference]: Finished difference. Result has 297 places, 527 transitions, 11589 flow [2024-02-02 09:16:30,966 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=11240, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=526, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=163, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=363, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=11589, PETRI_PLACES=297, PETRI_TRANSITIONS=527} [2024-02-02 09:16:30,967 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 221 predicate places. [2024-02-02 09:16:30,967 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 527 transitions, 11589 flow [2024-02-02 09:16:30,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.77777777777778) internal successors, (160), 9 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:16:30,967 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:16:30,967 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:16:30,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-02-02 09:16:30,967 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 58 more)] === [2024-02-02 09:16:30,968 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:16:30,968 INFO L85 PathProgramCache]: Analyzing trace with hash -1040574829, now seen corresponding path program 5 times [2024-02-02 09:16:30,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:16:30,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454530411] [2024-02-02 09:16:30,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:16:30,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:16:30,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:16:31,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:16:31,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:16:31,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454530411] [2024-02-02 09:16:31,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454530411] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:16:31,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:16:31,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-02 09:16:31,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023268513] [2024-02-02 09:16:31,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:16:31,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-02 09:16:31,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:16:31,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-02 09:16:31,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-02-02 09:16:31,195 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 72 [2024-02-02 09:16:31,195 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 527 transitions, 11589 flow. Second operand has 9 states, 9 states have (on average 17.77777777777778) internal successors, (160), 9 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:16:31,195 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:16:31,195 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 72 [2024-02-02 09:16:31,196 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:16:32,378 INFO L124 PetriNetUnfolderBase]: 2911/5329 cut-off events. [2024-02-02 09:16:32,378 INFO L125 PetriNetUnfolderBase]: For 174781/175415 co-relation queries the response was YES. [2024-02-02 09:16:32,418 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44247 conditions, 5329 events. 2911/5329 cut-off events. For 174781/175415 co-relation queries the response was YES. Maximal size of possible extension queue 357. Compared 37435 event pairs, 361 based on Foata normal form. 31/5200 useless extension candidates. Maximal degree in co-relation 44141. Up to 2665 conditions per place. [2024-02-02 09:16:32,441 INFO L140 encePairwiseOnDemand]: 61/72 looper letters, 352 selfloop transitions, 170 changer transitions 0/554 dead transitions. [2024-02-02 09:16:32,441 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 554 transitions, 12880 flow [2024-02-02 09:16:32,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-02 09:16:32,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-02 09:16:32,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 191 transitions. [2024-02-02 09:16:32,442 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37896825396825395 [2024-02-02 09:16:32,442 INFO L175 Difference]: Start difference. First operand has 297 places, 527 transitions, 11589 flow. Second operand 7 states and 191 transitions. [2024-02-02 09:16:32,442 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 554 transitions, 12880 flow [2024-02-02 09:16:32,937 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 554 transitions, 12467 flow, removed 1 selfloop flow, removed 12 redundant places. [2024-02-02 09:16:32,946 INFO L231 Difference]: Finished difference. Result has 290 places, 530 transitions, 11629 flow [2024-02-02 09:16:32,946 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=11126, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=525, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=165, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=357, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=11629, PETRI_PLACES=290, PETRI_TRANSITIONS=530} [2024-02-02 09:16:32,946 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 214 predicate places. [2024-02-02 09:16:32,947 INFO L495 AbstractCegarLoop]: Abstraction has has 290 places, 530 transitions, 11629 flow [2024-02-02 09:16:32,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.77777777777778) internal successors, (160), 9 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:16:32,947 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:16:32,947 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:16:32,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-02-02 09:16:32,947 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 58 more)] === [2024-02-02 09:16:32,947 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:16:32,948 INFO L85 PathProgramCache]: Analyzing trace with hash -1220063089, now seen corresponding path program 1 times [2024-02-02 09:16:32,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:16:32,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578115424] [2024-02-02 09:16:32,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:16:32,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:16:32,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:16:33,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:16:33,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:16:33,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578115424] [2024-02-02 09:16:33,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578115424] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:16:33,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:16:33,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-02 09:16:33,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127283885] [2024-02-02 09:16:33,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:16:33,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-02 09:16:33,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:16:33,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-02 09:16:33,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-02-02 09:16:33,235 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 72 [2024-02-02 09:16:33,236 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 530 transitions, 11629 flow. Second operand has 9 states, 9 states have (on average 19.88888888888889) internal successors, (179), 9 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:16:33,236 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:16:33,236 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 72 [2024-02-02 09:16:33,236 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:16:34,466 INFO L124 PetriNetUnfolderBase]: 2703/5244 cut-off events. [2024-02-02 09:16:34,466 INFO L125 PetriNetUnfolderBase]: For 184177/184842 co-relation queries the response was YES. [2024-02-02 09:16:34,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43252 conditions, 5244 events. 2703/5244 cut-off events. For 184177/184842 co-relation queries the response was YES. Maximal size of possible extension queue 361. Compared 39254 event pairs, 537 based on Foata normal form. 83/5171 useless extension candidates. Maximal degree in co-relation 43153. Up to 2575 conditions per place. [2024-02-02 09:16:34,535 INFO L140 encePairwiseOnDemand]: 58/72 looper letters, 372 selfloop transitions, 153 changer transitions 4/573 dead transitions. [2024-02-02 09:16:34,535 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 573 transitions, 13098 flow [2024-02-02 09:16:34,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-02 09:16:34,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-02 09:16:34,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 244 transitions. [2024-02-02 09:16:34,536 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4236111111111111 [2024-02-02 09:16:34,537 INFO L175 Difference]: Start difference. First operand has 290 places, 530 transitions, 11629 flow. Second operand 8 states and 244 transitions. [2024-02-02 09:16:34,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 573 transitions, 13098 flow [2024-02-02 09:16:35,104 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 573 transitions, 12815 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-02-02 09:16:35,112 INFO L231 Difference]: Finished difference. Result has 295 places, 531 transitions, 11771 flow [2024-02-02 09:16:35,113 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=11346, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=530, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=151, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=378, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=11771, PETRI_PLACES=295, PETRI_TRANSITIONS=531} [2024-02-02 09:16:35,113 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 219 predicate places. [2024-02-02 09:16:35,113 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 531 transitions, 11771 flow [2024-02-02 09:16:35,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 19.88888888888889) internal successors, (179), 9 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:16:35,114 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:16:35,114 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:16:35,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-02-02 09:16:35,114 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 58 more)] === [2024-02-02 09:16:35,114 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:16:35,114 INFO L85 PathProgramCache]: Analyzing trace with hash -1776605787, now seen corresponding path program 2 times [2024-02-02 09:16:35,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:16:35,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894518502] [2024-02-02 09:16:35,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:16:35,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:16:35,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:16:35,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:16:35,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:16:35,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894518502] [2024-02-02 09:16:35,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894518502] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:16:35,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:16:35,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-02 09:16:35,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579095077] [2024-02-02 09:16:35,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:16:35,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-02 09:16:35,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:16:35,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-02 09:16:35,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-02-02 09:16:35,406 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 72 [2024-02-02 09:16:35,406 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 531 transitions, 11771 flow. Second operand has 9 states, 9 states have (on average 19.88888888888889) internal successors, (179), 9 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:16:35,406 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:16:35,406 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 72 [2024-02-02 09:16:35,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:16:36,644 INFO L124 PetriNetUnfolderBase]: 2753/5363 cut-off events. [2024-02-02 09:16:36,644 INFO L125 PetriNetUnfolderBase]: For 188221/189042 co-relation queries the response was YES. [2024-02-02 09:16:36,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44335 conditions, 5363 events. 2753/5363 cut-off events. For 188221/189042 co-relation queries the response was YES. Maximal size of possible extension queue 370. Compared 40196 event pairs, 683 based on Foata normal form. 78/5275 useless extension candidates. Maximal degree in co-relation 44234. Up to 2274 conditions per place. [2024-02-02 09:16:36,709 INFO L140 encePairwiseOnDemand]: 57/72 looper letters, 386 selfloop transitions, 153 changer transitions 4/587 dead transitions. [2024-02-02 09:16:36,709 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 587 transitions, 13468 flow [2024-02-02 09:16:36,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-02 09:16:36,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-02 09:16:36,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 246 transitions. [2024-02-02 09:16:36,711 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4270833333333333 [2024-02-02 09:16:36,711 INFO L175 Difference]: Start difference. First operand has 295 places, 531 transitions, 11771 flow. Second operand 8 states and 246 transitions. [2024-02-02 09:16:36,711 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 587 transitions, 13468 flow [2024-02-02 09:16:37,229 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 587 transitions, 13250 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-02-02 09:16:37,237 INFO L231 Difference]: Finished difference. Result has 299 places, 536 transitions, 12036 flow [2024-02-02 09:16:37,238 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=11574, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=531, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=148, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=381, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=12036, PETRI_PLACES=299, PETRI_TRANSITIONS=536} [2024-02-02 09:16:37,241 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 223 predicate places. [2024-02-02 09:16:37,241 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 536 transitions, 12036 flow [2024-02-02 09:16:37,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 19.88888888888889) internal successors, (179), 9 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:16:37,241 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:16:37,241 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:16:37,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-02-02 09:16:37,241 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 58 more)] === [2024-02-02 09:16:37,242 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:16:37,242 INFO L85 PathProgramCache]: Analyzing trace with hash -1555585319, now seen corresponding path program 3 times [2024-02-02 09:16:37,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:16:37,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571563121] [2024-02-02 09:16:37,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:16:37,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:16:37,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:16:37,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:16:37,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:16:37,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571563121] [2024-02-02 09:16:37,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571563121] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:16:37,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:16:37,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-02 09:16:37,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543186911] [2024-02-02 09:16:37,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:16:37,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-02 09:16:37,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:16:37,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-02 09:16:37,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-02-02 09:16:37,507 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 72 [2024-02-02 09:16:37,507 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 536 transitions, 12036 flow. Second operand has 9 states, 9 states have (on average 19.88888888888889) internal successors, (179), 9 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:16:37,507 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:16:37,507 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 72 [2024-02-02 09:16:37,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:16:38,887 INFO L124 PetriNetUnfolderBase]: 2744/5393 cut-off events. [2024-02-02 09:16:38,887 INFO L125 PetriNetUnfolderBase]: For 191676/192596 co-relation queries the response was YES. [2024-02-02 09:16:38,930 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46011 conditions, 5393 events. 2744/5393 cut-off events. For 191676/192596 co-relation queries the response was YES. Maximal size of possible extension queue 376. Compared 40860 event pairs, 689 based on Foata normal form. 86/5319 useless extension candidates. Maximal degree in co-relation 45908. Up to 2282 conditions per place. [2024-02-02 09:16:38,951 INFO L140 encePairwiseOnDemand]: 53/72 looper letters, 338 selfloop transitions, 212 changer transitions 0/594 dead transitions. [2024-02-02 09:16:38,951 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 594 transitions, 13821 flow [2024-02-02 09:16:38,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-02 09:16:38,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-02 09:16:38,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 257 transitions. [2024-02-02 09:16:38,952 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4461805555555556 [2024-02-02 09:16:38,953 INFO L175 Difference]: Start difference. First operand has 299 places, 536 transitions, 12036 flow. Second operand 8 states and 257 transitions. [2024-02-02 09:16:38,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 594 transitions, 13821 flow [2024-02-02 09:16:39,555 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 594 transitions, 13792 flow, removed 8 selfloop flow, removed 2 redundant places. [2024-02-02 09:16:39,564 INFO L231 Difference]: Finished difference. Result has 306 places, 545 transitions, 12660 flow [2024-02-02 09:16:39,565 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=12010, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=536, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=203, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=327, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=12660, PETRI_PLACES=306, PETRI_TRANSITIONS=545} [2024-02-02 09:16:39,565 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 230 predicate places. [2024-02-02 09:16:39,565 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 545 transitions, 12660 flow [2024-02-02 09:16:39,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 19.88888888888889) internal successors, (179), 9 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:16:39,565 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:16:39,566 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:16:39,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-02-02 09:16:39,569 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 58 more)] === [2024-02-02 09:16:39,570 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:16:39,571 INFO L85 PathProgramCache]: Analyzing trace with hash 1535152917, now seen corresponding path program 4 times [2024-02-02 09:16:39,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:16:39,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47331356] [2024-02-02 09:16:39,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:16:39,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:16:39,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:16:39,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:16:39,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:16:39,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47331356] [2024-02-02 09:16:39,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47331356] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:16:39,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:16:39,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-02 09:16:39,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38984588] [2024-02-02 09:16:39,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:16:39,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-02 09:16:39,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:16:39,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-02 09:16:39,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-02-02 09:16:39,892 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 72 [2024-02-02 09:16:39,892 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 545 transitions, 12660 flow. Second operand has 9 states, 9 states have (on average 19.88888888888889) internal successors, (179), 9 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:16:39,892 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:16:39,892 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 72 [2024-02-02 09:16:39,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:16:41,215 INFO L124 PetriNetUnfolderBase]: 2753/5436 cut-off events. [2024-02-02 09:16:41,216 INFO L125 PetriNetUnfolderBase]: For 201118/202038 co-relation queries the response was YES. [2024-02-02 09:16:41,262 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47908 conditions, 5436 events. 2753/5436 cut-off events. For 201118/202038 co-relation queries the response was YES. Maximal size of possible extension queue 378. Compared 41356 event pairs, 693 based on Foata normal form. 86/5362 useless extension candidates. Maximal degree in co-relation 47802. Up to 2288 conditions per place. [2024-02-02 09:16:41,286 INFO L140 encePairwiseOnDemand]: 53/72 looper letters, 334 selfloop transitions, 226 changer transitions 2/606 dead transitions. [2024-02-02 09:16:41,286 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 606 transitions, 14572 flow [2024-02-02 09:16:41,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-02 09:16:41,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-02 09:16:41,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 268 transitions. [2024-02-02 09:16:41,287 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4652777777777778 [2024-02-02 09:16:41,287 INFO L175 Difference]: Start difference. First operand has 306 places, 545 transitions, 12660 flow. Second operand 8 states and 268 transitions. [2024-02-02 09:16:41,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 606 transitions, 14572 flow [2024-02-02 09:16:41,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 606 transitions, 14279 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-02-02 09:16:41,858 INFO L231 Difference]: Finished difference. Result has 309 places, 548 transitions, 12976 flow [2024-02-02 09:16:41,858 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=12372, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=545, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=223, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=322, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=12976, PETRI_PLACES=309, PETRI_TRANSITIONS=548} [2024-02-02 09:16:41,858 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 233 predicate places. [2024-02-02 09:16:41,859 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 548 transitions, 12976 flow [2024-02-02 09:16:41,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 19.88888888888889) internal successors, (179), 9 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:16:41,859 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:16:41,859 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:16:41,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-02-02 09:16:41,859 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 58 more)] === [2024-02-02 09:16:41,859 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:16:41,860 INFO L85 PathProgramCache]: Analyzing trace with hash 1683346789, now seen corresponding path program 5 times [2024-02-02 09:16:41,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:16:41,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300812052] [2024-02-02 09:16:41,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:16:41,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:16:41,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:16:42,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:16:42,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:16:42,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300812052] [2024-02-02 09:16:42,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300812052] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:16:42,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:16:42,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-02 09:16:42,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084184776] [2024-02-02 09:16:42,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:16:42,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-02 09:16:42,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:16:42,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-02 09:16:42,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-02-02 09:16:42,093 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 72 [2024-02-02 09:16:42,094 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 548 transitions, 12976 flow. Second operand has 9 states, 9 states have (on average 19.88888888888889) internal successors, (179), 9 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:16:42,094 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:16:42,094 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 72 [2024-02-02 09:16:42,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:16:43,434 INFO L124 PetriNetUnfolderBase]: 2819/5538 cut-off events. [2024-02-02 09:16:43,434 INFO L125 PetriNetUnfolderBase]: For 205902/206835 co-relation queries the response was YES. [2024-02-02 09:16:43,491 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49164 conditions, 5538 events. 2819/5538 cut-off events. For 205902/206835 co-relation queries the response was YES. Maximal size of possible extension queue 382. Compared 42126 event pairs, 674 based on Foata normal form. 92/5464 useless extension candidates. Maximal degree in co-relation 49058. Up to 2374 conditions per place. [2024-02-02 09:16:43,518 INFO L140 encePairwiseOnDemand]: 58/72 looper letters, 373 selfloop transitions, 173 changer transitions 4/594 dead transitions. [2024-02-02 09:16:43,519 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 594 transitions, 14555 flow [2024-02-02 09:16:43,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-02 09:16:43,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-02 09:16:43,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 226 transitions. [2024-02-02 09:16:43,520 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44841269841269843 [2024-02-02 09:16:43,520 INFO L175 Difference]: Start difference. First operand has 309 places, 548 transitions, 12976 flow. Second operand 7 states and 226 transitions. [2024-02-02 09:16:43,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 594 transitions, 14555 flow [2024-02-02 09:16:44,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 594 transitions, 14175 flow, removed 8 selfloop flow, removed 9 redundant places. [2024-02-02 09:16:44,240 INFO L231 Difference]: Finished difference. Result has 306 places, 552 transitions, 13041 flow [2024-02-02 09:16:44,241 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=12583, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=547, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=168, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=377, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=13041, PETRI_PLACES=306, PETRI_TRANSITIONS=552} [2024-02-02 09:16:44,241 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 230 predicate places. [2024-02-02 09:16:44,242 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 552 transitions, 13041 flow [2024-02-02 09:16:44,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 19.88888888888889) internal successors, (179), 9 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:16:44,242 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:16:44,242 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:16:44,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-02-02 09:16:44,242 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 58 more)] === [2024-02-02 09:16:44,243 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:16:44,243 INFO L85 PathProgramCache]: Analyzing trace with hash -121040705, now seen corresponding path program 1 times [2024-02-02 09:16:44,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:16:44,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699767744] [2024-02-02 09:16:44,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:16:44,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:16:44,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:16:44,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:16:44,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:16:44,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699767744] [2024-02-02 09:16:44,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699767744] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:16:44,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:16:44,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-02 09:16:44,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922476716] [2024-02-02 09:16:44,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:16:44,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-02 09:16:44,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:16:44,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-02 09:16:44,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-02-02 09:16:44,431 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 72 [2024-02-02 09:16:44,432 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 552 transitions, 13041 flow. Second operand has 7 states, 7 states have (on average 30.0) internal successors, (210), 7 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:16:44,432 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:16:44,432 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 72 [2024-02-02 09:16:44,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:16:45,611 INFO L124 PetriNetUnfolderBase]: 2146/4594 cut-off events. [2024-02-02 09:16:45,612 INFO L125 PetriNetUnfolderBase]: For 188569/189648 co-relation queries the response was YES. [2024-02-02 09:16:45,648 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42613 conditions, 4594 events. 2146/4594 cut-off events. For 188569/189648 co-relation queries the response was YES. Maximal size of possible extension queue 358. Compared 37157 event pairs, 249 based on Foata normal form. 73/4496 useless extension candidates. Maximal degree in co-relation 42511. Up to 1680 conditions per place. [2024-02-02 09:16:45,669 INFO L140 encePairwiseOnDemand]: 64/72 looper letters, 359 selfloop transitions, 170 changer transitions 2/606 dead transitions. [2024-02-02 09:16:45,669 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 606 transitions, 14808 flow [2024-02-02 09:16:45,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-02 09:16:45,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-02 09:16:45,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 247 transitions. [2024-02-02 09:16:45,670 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5717592592592593 [2024-02-02 09:16:45,670 INFO L175 Difference]: Start difference. First operand has 306 places, 552 transitions, 13041 flow. Second operand 6 states and 247 transitions. [2024-02-02 09:16:45,670 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 606 transitions, 14808 flow [2024-02-02 09:16:46,177 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 606 transitions, 14538 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-02-02 09:16:46,186 INFO L231 Difference]: Finished difference. Result has 309 places, 570 transitions, 13518 flow [2024-02-02 09:16:46,187 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=12771, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=552, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=152, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=383, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=13518, PETRI_PLACES=309, PETRI_TRANSITIONS=570} [2024-02-02 09:16:46,187 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 233 predicate places. [2024-02-02 09:16:46,187 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 570 transitions, 13518 flow [2024-02-02 09:16:46,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 30.0) internal successors, (210), 7 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:16:46,188 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:16:46,188 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:16:46,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-02-02 09:16:46,188 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 58 more)] === [2024-02-02 09:16:46,188 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:16:46,188 INFO L85 PathProgramCache]: Analyzing trace with hash 983414531, now seen corresponding path program 1 times [2024-02-02 09:16:46,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:16:46,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87794048] [2024-02-02 09:16:46,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:16:46,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:16:46,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:16:46,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:16:46,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:16:46,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87794048] [2024-02-02 09:16:46,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87794048] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:16:46,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:16:46,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-02 09:16:46,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212849596] [2024-02-02 09:16:46,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:16:46,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-02 09:16:46,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:16:46,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-02 09:16:46,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-02-02 09:16:46,341 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 72 [2024-02-02 09:16:46,341 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 570 transitions, 13518 flow. Second operand has 7 states, 7 states have (on average 30.0) internal successors, (210), 7 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:16:46,342 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:16:46,342 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 72 [2024-02-02 09:16:46,342 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:16:47,493 INFO L124 PetriNetUnfolderBase]: 2181/4664 cut-off events. [2024-02-02 09:16:47,493 INFO L125 PetriNetUnfolderBase]: For 193469/194516 co-relation queries the response was YES. [2024-02-02 09:16:47,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43841 conditions, 4664 events. 2181/4664 cut-off events. For 193469/194516 co-relation queries the response was YES. Maximal size of possible extension queue 358. Compared 37740 event pairs, 239 based on Foata normal form. 53/4541 useless extension candidates. Maximal degree in co-relation 43737. Up to 1692 conditions per place. [2024-02-02 09:16:47,555 INFO L140 encePairwiseOnDemand]: 65/72 looper letters, 364 selfloop transitions, 163 changer transitions 2/604 dead transitions. [2024-02-02 09:16:47,555 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 604 transitions, 15005 flow [2024-02-02 09:16:47,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-02 09:16:47,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-02 09:16:47,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 243 transitions. [2024-02-02 09:16:47,556 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5625 [2024-02-02 09:16:47,556 INFO L175 Difference]: Start difference. First operand has 309 places, 570 transitions, 13518 flow. Second operand 6 states and 243 transitions. [2024-02-02 09:16:47,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 604 transitions, 15005 flow [2024-02-02 09:16:48,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 604 transitions, 14611 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-02-02 09:16:48,117 INFO L231 Difference]: Finished difference. Result has 311 places, 573 transitions, 13606 flow [2024-02-02 09:16:48,117 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=13136, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=570, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=160, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=409, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=13606, PETRI_PLACES=311, PETRI_TRANSITIONS=573} [2024-02-02 09:16:48,117 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 235 predicate places. [2024-02-02 09:16:48,118 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 573 transitions, 13606 flow [2024-02-02 09:16:48,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 30.0) internal successors, (210), 7 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:16:48,118 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:16:48,118 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:16:48,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-02-02 09:16:48,118 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 58 more)] === [2024-02-02 09:16:48,118 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:16:48,119 INFO L85 PathProgramCache]: Analyzing trace with hash -46605295, now seen corresponding path program 2 times [2024-02-02 09:16:48,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:16:48,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940709000] [2024-02-02 09:16:48,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:16:48,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:16:48,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:16:48,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:16:48,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:16:48,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940709000] [2024-02-02 09:16:48,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940709000] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:16:48,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:16:48,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-02 09:16:48,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995760862] [2024-02-02 09:16:48,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:16:48,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-02 09:16:48,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:16:48,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-02 09:16:48,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-02-02 09:16:48,280 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 72 [2024-02-02 09:16:48,280 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 573 transitions, 13606 flow. Second operand has 8 states, 8 states have (on average 29.75) internal successors, (238), 8 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:16:48,280 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:16:48,280 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 72 [2024-02-02 09:16:48,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:16:49,440 INFO L124 PetriNetUnfolderBase]: 2179/4648 cut-off events. [2024-02-02 09:16:49,441 INFO L125 PetriNetUnfolderBase]: For 191667/192699 co-relation queries the response was YES. [2024-02-02 09:16:49,473 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44074 conditions, 4648 events. 2179/4648 cut-off events. For 191667/192699 co-relation queries the response was YES. Maximal size of possible extension queue 359. Compared 37471 event pairs, 398 based on Foata normal form. 50/4527 useless extension candidates. Maximal degree in co-relation 43969. Up to 3455 conditions per place. [2024-02-02 09:16:49,493 INFO L140 encePairwiseOnDemand]: 66/72 looper letters, 456 selfloop transitions, 61 changer transitions 0/592 dead transitions. [2024-02-02 09:16:49,493 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 592 transitions, 14794 flow [2024-02-02 09:16:49,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-02 09:16:49,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-02 09:16:49,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 258 transitions. [2024-02-02 09:16:49,494 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5119047619047619 [2024-02-02 09:16:49,494 INFO L175 Difference]: Start difference. First operand has 311 places, 573 transitions, 13606 flow. Second operand 7 states and 258 transitions. [2024-02-02 09:16:49,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 592 transitions, 14794 flow [2024-02-02 09:16:49,952 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 592 transitions, 14663 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-02-02 09:16:49,962 INFO L231 Difference]: Finished difference. Result has 316 places, 574 transitions, 13617 flow [2024-02-02 09:16:49,962 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=13476, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=573, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=512, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=13617, PETRI_PLACES=316, PETRI_TRANSITIONS=574} [2024-02-02 09:16:49,962 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 240 predicate places. [2024-02-02 09:16:49,963 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 574 transitions, 13617 flow [2024-02-02 09:16:49,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 29.75) internal successors, (238), 8 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:16:49,963 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:16:49,963 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:16:49,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-02-02 09:16:49,963 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 58 more)] === [2024-02-02 09:16:49,963 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:16:49,964 INFO L85 PathProgramCache]: Analyzing trace with hash -455256069, now seen corresponding path program 2 times [2024-02-02 09:16:49,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:16:49,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928448650] [2024-02-02 09:16:49,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:16:49,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:16:49,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:16:50,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:16:50,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:16:50,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928448650] [2024-02-02 09:16:50,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928448650] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:16:50,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:16:50,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-02 09:16:50,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558988106] [2024-02-02 09:16:50,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:16:50,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-02 09:16:50,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:16:50,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-02 09:16:50,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-02-02 09:16:50,110 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 72 [2024-02-02 09:16:50,111 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 574 transitions, 13617 flow. Second operand has 7 states, 7 states have (on average 30.0) internal successors, (210), 7 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:16:50,111 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:16:50,111 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 72 [2024-02-02 09:16:50,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:16:51,347 INFO L124 PetriNetUnfolderBase]: 2162/4626 cut-off events. [2024-02-02 09:16:51,348 INFO L125 PetriNetUnfolderBase]: For 192189/193256 co-relation queries the response was YES. [2024-02-02 09:16:51,406 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43540 conditions, 4626 events. 2162/4626 cut-off events. For 192189/193256 co-relation queries the response was YES. Maximal size of possible extension queue 358. Compared 37401 event pairs, 249 based on Foata normal form. 61/4516 useless extension candidates. Maximal degree in co-relation 43434. Up to 1696 conditions per place. [2024-02-02 09:16:51,434 INFO L140 encePairwiseOnDemand]: 64/72 looper letters, 373 selfloop transitions, 156 changer transitions 2/606 dead transitions. [2024-02-02 09:16:51,434 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 606 transitions, 15074 flow [2024-02-02 09:16:51,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-02 09:16:51,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-02 09:16:51,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 246 transitions. [2024-02-02 09:16:51,436 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5694444444444444 [2024-02-02 09:16:51,436 INFO L175 Difference]: Start difference. First operand has 316 places, 574 transitions, 13617 flow. Second operand 6 states and 246 transitions. [2024-02-02 09:16:51,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 606 transitions, 15074 flow [2024-02-02 09:16:52,200 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 606 transitions, 14822 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-02-02 09:16:52,213 INFO L231 Difference]: Finished difference. Result has 317 places, 574 transitions, 13716 flow [2024-02-02 09:16:52,214 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=13365, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=574, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=156, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=418, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=13716, PETRI_PLACES=317, PETRI_TRANSITIONS=574} [2024-02-02 09:16:52,214 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 241 predicate places. [2024-02-02 09:16:52,214 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 574 transitions, 13716 flow [2024-02-02 09:16:52,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 30.0) internal successors, (210), 7 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:16:52,215 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:16:52,215 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:16:52,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-02-02 09:16:52,215 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 58 more)] === [2024-02-02 09:16:52,216 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:16:52,216 INFO L85 PathProgramCache]: Analyzing trace with hash 625955203, now seen corresponding path program 3 times [2024-02-02 09:16:52,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:16:52,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720944878] [2024-02-02 09:16:52,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:16:52,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:16:52,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:16:52,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:16:52,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:16:52,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720944878] [2024-02-02 09:16:52,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720944878] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:16:52,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:16:52,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-02 09:16:52,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21558776] [2024-02-02 09:16:52,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:16:52,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-02 09:16:52,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:16:52,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-02 09:16:52,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-02-02 09:16:52,408 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 72 [2024-02-02 09:16:52,409 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 574 transitions, 13716 flow. Second operand has 7 states, 7 states have (on average 30.0) internal successors, (210), 7 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:16:52,409 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:16:52,409 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 72 [2024-02-02 09:16:52,409 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:16:53,543 INFO L124 PetriNetUnfolderBase]: 2147/4589 cut-off events. [2024-02-02 09:16:53,544 INFO L125 PetriNetUnfolderBase]: For 197659/198682 co-relation queries the response was YES. [2024-02-02 09:16:53,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43352 conditions, 4589 events. 2147/4589 cut-off events. For 197659/198682 co-relation queries the response was YES. Maximal size of possible extension queue 358. Compared 36980 event pairs, 217 based on Foata normal form. 61/4474 useless extension candidates. Maximal degree in co-relation 43245. Up to 1696 conditions per place. [2024-02-02 09:16:53,604 INFO L140 encePairwiseOnDemand]: 65/72 looper letters, 365 selfloop transitions, 161 changer transitions 2/603 dead transitions. [2024-02-02 09:16:53,604 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 603 transitions, 15085 flow [2024-02-02 09:16:53,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-02 09:16:53,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-02 09:16:53,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 243 transitions. [2024-02-02 09:16:53,606 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5625 [2024-02-02 09:16:53,606 INFO L175 Difference]: Start difference. First operand has 317 places, 574 transitions, 13716 flow. Second operand 6 states and 243 transitions. [2024-02-02 09:16:53,606 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 603 transitions, 15085 flow [2024-02-02 09:16:54,364 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 603 transitions, 14505 flow, removed 12 selfloop flow, removed 15 redundant places. [2024-02-02 09:16:54,373 INFO L231 Difference]: Finished difference. Result has 306 places, 573 transitions, 13424 flow [2024-02-02 09:16:54,374 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=13102, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=573, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=161, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=412, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=13424, PETRI_PLACES=306, PETRI_TRANSITIONS=573} [2024-02-02 09:16:54,374 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 230 predicate places. [2024-02-02 09:16:54,374 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 573 transitions, 13424 flow [2024-02-02 09:16:54,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 30.0) internal successors, (210), 7 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:16:54,375 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:16:54,375 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:16:54,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-02-02 09:16:54,375 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting P0Err9ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 58 more)] === [2024-02-02 09:16:54,375 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:16:54,375 INFO L85 PathProgramCache]: Analyzing trace with hash -1054131192, now seen corresponding path program 1 times [2024-02-02 09:16:54,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:16:54,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287937582] [2024-02-02 09:16:54,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:16:54,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:16:54,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:16:54,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:16:54,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:16:54,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287937582] [2024-02-02 09:16:54,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287937582] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:16:54,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:16:54,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-02 09:16:54,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172064043] [2024-02-02 09:16:54,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:16:54,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-02 09:16:54,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:16:54,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-02 09:16:54,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-02-02 09:16:54,594 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 72 [2024-02-02 09:16:54,594 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 573 transitions, 13424 flow. Second operand has 8 states, 8 states have (on average 18.25) internal successors, (146), 8 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:16:54,595 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:16:54,595 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 72 [2024-02-02 09:16:54,595 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:16:56,145 INFO L124 PetriNetUnfolderBase]: 3295/6254 cut-off events. [2024-02-02 09:16:56,145 INFO L125 PetriNetUnfolderBase]: For 215619/216475 co-relation queries the response was YES. [2024-02-02 09:16:56,200 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55258 conditions, 6254 events. 3295/6254 cut-off events. For 215619/216475 co-relation queries the response was YES. Maximal size of possible extension queue 383. Compared 46618 event pairs, 467 based on Foata normal form. 37/6117 useless extension candidates. Maximal degree in co-relation 55163. Up to 2512 conditions per place. [2024-02-02 09:16:56,228 INFO L140 encePairwiseOnDemand]: 61/72 looper letters, 484 selfloop transitions, 184 changer transitions 2/704 dead transitions. [2024-02-02 09:16:56,229 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 704 transitions, 16551 flow [2024-02-02 09:16:56,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-02 09:16:56,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-02 09:16:56,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 255 transitions. [2024-02-02 09:16:56,230 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4427083333333333 [2024-02-02 09:16:56,230 INFO L175 Difference]: Start difference. First operand has 306 places, 573 transitions, 13424 flow. Second operand 8 states and 255 transitions. [2024-02-02 09:16:56,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 704 transitions, 16551 flow [2024-02-02 09:16:56,863 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 704 transitions, 16257 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-02-02 09:16:56,876 INFO L231 Difference]: Finished difference. Result has 312 places, 599 transitions, 14086 flow [2024-02-02 09:16:56,876 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=13171, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=573, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=158, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=411, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=14086, PETRI_PLACES=312, PETRI_TRANSITIONS=599} [2024-02-02 09:16:56,877 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 236 predicate places. [2024-02-02 09:16:56,877 INFO L495 AbstractCegarLoop]: Abstraction has has 312 places, 599 transitions, 14086 flow [2024-02-02 09:16:56,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.25) internal successors, (146), 8 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:16:56,877 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:16:56,877 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:16:56,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-02-02 09:16:56,878 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting P0Err9ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 58 more)] === [2024-02-02 09:16:56,878 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:16:56,878 INFO L85 PathProgramCache]: Analyzing trace with hash 2145619918, now seen corresponding path program 2 times [2024-02-02 09:16:56,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:16:56,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94765247] [2024-02-02 09:16:56,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:16:56,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:16:56,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:16:57,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:16:57,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:16:57,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94765247] [2024-02-02 09:16:57,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94765247] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:16:57,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:16:57,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-02 09:16:57,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320252073] [2024-02-02 09:16:57,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:16:57,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-02 09:16:57,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:16:57,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-02 09:16:57,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-02-02 09:16:57,112 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 72 [2024-02-02 09:16:57,112 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 599 transitions, 14086 flow. Second operand has 8 states, 8 states have (on average 18.25) internal successors, (146), 8 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:16:57,112 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:16:57,112 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 72 [2024-02-02 09:16:57,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:16:58,877 INFO L124 PetriNetUnfolderBase]: 3351/6350 cut-off events. [2024-02-02 09:16:58,877 INFO L125 PetriNetUnfolderBase]: For 221234/222129 co-relation queries the response was YES. [2024-02-02 09:16:58,915 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56587 conditions, 6350 events. 3351/6350 cut-off events. For 221234/222129 co-relation queries the response was YES. Maximal size of possible extension queue 383. Compared 47475 event pairs, 463 based on Foata normal form. 37/6213 useless extension candidates. Maximal degree in co-relation 56490. Up to 2532 conditions per place. [2024-02-02 09:16:58,940 INFO L140 encePairwiseOnDemand]: 61/72 looper letters, 494 selfloop transitions, 178 changer transitions 2/708 dead transitions. [2024-02-02 09:16:58,941 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 708 transitions, 16838 flow [2024-02-02 09:16:58,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-02 09:16:58,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-02 09:16:58,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 252 transitions. [2024-02-02 09:16:58,942 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4375 [2024-02-02 09:16:58,942 INFO L175 Difference]: Start difference. First operand has 312 places, 599 transitions, 14086 flow. Second operand 8 states and 252 transitions. [2024-02-02 09:16:58,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 708 transitions, 16838 flow [2024-02-02 09:16:59,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 708 transitions, 16700 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-02-02 09:16:59,482 INFO L231 Difference]: Finished difference. Result has 319 places, 603 transitions, 14394 flow [2024-02-02 09:16:59,483 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=13951, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=599, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=174, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=424, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=14394, PETRI_PLACES=319, PETRI_TRANSITIONS=603} [2024-02-02 09:16:59,483 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 243 predicate places. [2024-02-02 09:16:59,483 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 603 transitions, 14394 flow [2024-02-02 09:16:59,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.25) internal successors, (146), 8 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:16:59,484 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:16:59,484 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:16:59,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-02-02 09:16:59,484 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 58 more)] === [2024-02-02 09:16:59,484 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:16:59,484 INFO L85 PathProgramCache]: Analyzing trace with hash 1636313644, now seen corresponding path program 1 times [2024-02-02 09:16:59,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:16:59,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518575755] [2024-02-02 09:16:59,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:16:59,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:16:59,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:16:59,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:16:59,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:16:59,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518575755] [2024-02-02 09:16:59,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518575755] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:16:59,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:16:59,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-02 09:16:59,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772107440] [2024-02-02 09:16:59,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:16:59,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-02 09:16:59,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:16:59,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-02 09:16:59,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-02-02 09:16:59,711 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 72 [2024-02-02 09:16:59,712 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 603 transitions, 14394 flow. Second operand has 8 states, 8 states have (on average 20.125) internal successors, (161), 8 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:16:59,712 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:16:59,712 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 72 [2024-02-02 09:16:59,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:17:01,174 INFO L124 PetriNetUnfolderBase]: 3113/6118 cut-off events. [2024-02-02 09:17:01,174 INFO L125 PetriNetUnfolderBase]: For 235030/235992 co-relation queries the response was YES. [2024-02-02 09:17:01,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54185 conditions, 6118 events. 3113/6118 cut-off events. For 235030/235992 co-relation queries the response was YES. Maximal size of possible extension queue 381. Compared 47396 event pairs, 353 based on Foata normal form. 102/6080 useless extension candidates. Maximal degree in co-relation 54086. Up to 2276 conditions per place. [2024-02-02 09:17:01,256 INFO L140 encePairwiseOnDemand]: 62/72 looper letters, 394 selfloop transitions, 207 changer transitions 2/647 dead transitions. [2024-02-02 09:17:01,256 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 647 transitions, 16120 flow [2024-02-02 09:17:01,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-02 09:17:01,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-02 09:17:01,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 224 transitions. [2024-02-02 09:17:01,257 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-02-02 09:17:01,257 INFO L175 Difference]: Start difference. First operand has 319 places, 603 transitions, 14394 flow. Second operand 7 states and 224 transitions. [2024-02-02 09:17:01,257 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 647 transitions, 16120 flow [2024-02-02 09:17:01,886 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 647 transitions, 15833 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-02-02 09:17:01,896 INFO L231 Difference]: Finished difference. Result has 322 places, 603 transitions, 14583 flow [2024-02-02 09:17:01,897 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=14107, PETRI_DIFFERENCE_MINUEND_PLACES=315, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=603, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=207, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=396, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=14583, PETRI_PLACES=322, PETRI_TRANSITIONS=603} [2024-02-02 09:17:01,897 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 246 predicate places. [2024-02-02 09:17:01,897 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 603 transitions, 14583 flow [2024-02-02 09:17:01,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 20.125) internal successors, (161), 8 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:17:01,897 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:17:01,897 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:17:01,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-02-02 09:17:01,898 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting P0Err9ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 58 more)] === [2024-02-02 09:17:01,898 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:17:01,898 INFO L85 PathProgramCache]: Analyzing trace with hash 243311472, now seen corresponding path program 3 times [2024-02-02 09:17:01,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:17:01,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498759098] [2024-02-02 09:17:01,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:17:01,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:17:01,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:17:02,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:17:02,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:17:02,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498759098] [2024-02-02 09:17:02,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498759098] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:17:02,092 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:17:02,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-02 09:17:02,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245567387] [2024-02-02 09:17:02,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:17:02,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-02 09:17:02,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:17:02,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-02 09:17:02,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-02-02 09:17:02,117 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 72 [2024-02-02 09:17:02,117 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 603 transitions, 14583 flow. Second operand has 8 states, 8 states have (on average 18.25) internal successors, (146), 8 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:17:02,117 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:17:02,117 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 72 [2024-02-02 09:17:02,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:17:03,722 INFO L124 PetriNetUnfolderBase]: 3303/6271 cut-off events. [2024-02-02 09:17:03,722 INFO L125 PetriNetUnfolderBase]: For 240497/241391 co-relation queries the response was YES. [2024-02-02 09:17:03,762 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57194 conditions, 6271 events. 3303/6271 cut-off events. For 240497/241391 co-relation queries the response was YES. Maximal size of possible extension queue 382. Compared 46728 event pairs, 472 based on Foata normal form. 37/6135 useless extension candidates. Maximal degree in co-relation 57094. Up to 2516 conditions per place. [2024-02-02 09:17:03,787 INFO L140 encePairwiseOnDemand]: 61/72 looper letters, 478 selfloop transitions, 187 changer transitions 2/701 dead transitions. [2024-02-02 09:17:03,787 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 701 transitions, 17212 flow [2024-02-02 09:17:03,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-02 09:17:03,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-02 09:17:03,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 253 transitions. [2024-02-02 09:17:03,788 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4392361111111111 [2024-02-02 09:17:03,788 INFO L175 Difference]: Start difference. First operand has 322 places, 603 transitions, 14583 flow. Second operand 8 states and 253 transitions. [2024-02-02 09:17:03,788 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 701 transitions, 17212 flow [2024-02-02 09:17:04,386 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 701 transitions, 16798 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-02-02 09:17:04,396 INFO L231 Difference]: Finished difference. Result has 325 places, 604 transitions, 14611 flow [2024-02-02 09:17:04,397 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=14169, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=603, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=186, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=416, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=14611, PETRI_PLACES=325, PETRI_TRANSITIONS=604} [2024-02-02 09:17:04,397 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 249 predicate places. [2024-02-02 09:17:04,397 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 604 transitions, 14611 flow [2024-02-02 09:17:04,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.25) internal successors, (146), 8 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:17:04,398 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:17:04,398 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:17:04,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-02-02 09:17:04,398 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 58 more)] === [2024-02-02 09:17:04,412 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:17:04,412 INFO L85 PathProgramCache]: Analyzing trace with hash -130229206, now seen corresponding path program 2 times [2024-02-02 09:17:04,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:17:04,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681224685] [2024-02-02 09:17:04,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:17:04,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:17:04,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:17:04,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:17:04,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:17:04,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681224685] [2024-02-02 09:17:04,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681224685] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:17:04,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:17:04,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-02 09:17:04,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616475576] [2024-02-02 09:17:04,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:17:04,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-02 09:17:04,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:17:04,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-02 09:17:04,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-02-02 09:17:04,613 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 72 [2024-02-02 09:17:04,613 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 604 transitions, 14611 flow. Second operand has 8 states, 8 states have (on average 20.125) internal successors, (161), 8 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:17:04,613 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:17:04,613 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 72 [2024-02-02 09:17:04,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:17:06,035 INFO L124 PetriNetUnfolderBase]: 3072/6052 cut-off events. [2024-02-02 09:17:06,035 INFO L125 PetriNetUnfolderBase]: For 243110/244040 co-relation queries the response was YES. [2024-02-02 09:17:06,082 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54471 conditions, 6052 events. 3072/6052 cut-off events. For 243110/244040 co-relation queries the response was YES. Maximal size of possible extension queue 381. Compared 46824 event pairs, 343 based on Foata normal form. 86/5993 useless extension candidates. Maximal degree in co-relation 54369. Up to 2264 conditions per place. [2024-02-02 09:17:06,107 INFO L140 encePairwiseOnDemand]: 63/72 looper letters, 399 selfloop transitions, 196 changer transitions 2/641 dead transitions. [2024-02-02 09:17:06,108 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 641 transitions, 16216 flow [2024-02-02 09:17:06,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-02 09:17:06,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-02 09:17:06,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 219 transitions. [2024-02-02 09:17:06,109 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43452380952380953 [2024-02-02 09:17:06,109 INFO L175 Difference]: Start difference. First operand has 325 places, 604 transitions, 14611 flow. Second operand 7 states and 219 transitions. [2024-02-02 09:17:06,109 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 641 transitions, 16216 flow [2024-02-02 09:17:06,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 641 transitions, 15838 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-02-02 09:17:06,833 INFO L231 Difference]: Finished difference. Result has 324 places, 604 transitions, 14651 flow [2024-02-02 09:17:06,834 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=14241, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=604, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=196, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=408, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=14651, PETRI_PLACES=324, PETRI_TRANSITIONS=604} [2024-02-02 09:17:06,834 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 248 predicate places. [2024-02-02 09:17:06,834 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 604 transitions, 14651 flow [2024-02-02 09:17:06,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 20.125) internal successors, (161), 8 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:17:06,835 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:17:06,835 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:17:06,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-02-02 09:17:06,835 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 58 more)] === [2024-02-02 09:17:06,835 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:17:06,835 INFO L85 PathProgramCache]: Analyzing trace with hash 30109524, now seen corresponding path program 3 times [2024-02-02 09:17:06,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:17:06,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361613139] [2024-02-02 09:17:06,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:17:06,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:17:06,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:17:07,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:17:07,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:17:07,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361613139] [2024-02-02 09:17:07,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1361613139] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:17:07,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:17:07,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-02 09:17:07,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797395494] [2024-02-02 09:17:07,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:17:07,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-02 09:17:07,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:17:07,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-02 09:17:07,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-02-02 09:17:07,076 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 72 [2024-02-02 09:17:07,077 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 604 transitions, 14651 flow. Second operand has 9 states, 9 states have (on average 19.88888888888889) internal successors, (179), 9 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:17:07,077 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:17:07,077 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 72 [2024-02-02 09:17:07,077 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:17:08,671 INFO L124 PetriNetUnfolderBase]: 3130/6141 cut-off events. [2024-02-02 09:17:08,672 INFO L125 PetriNetUnfolderBase]: For 243015/243951 co-relation queries the response was YES. [2024-02-02 09:17:08,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54956 conditions, 6141 events. 3130/6141 cut-off events. For 243015/243951 co-relation queries the response was YES. Maximal size of possible extension queue 390. Compared 47490 event pairs, 642 based on Foata normal form. 76/6069 useless extension candidates. Maximal degree in co-relation 54855. Up to 5072 conditions per place. [2024-02-02 09:17:08,743 INFO L140 encePairwiseOnDemand]: 63/72 looper letters, 526 selfloop transitions, 65 changer transitions 0/635 dead transitions. [2024-02-02 09:17:08,743 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 635 transitions, 16173 flow [2024-02-02 09:17:08,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-02-02 09:17:08,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-02-02 09:17:08,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 244 transitions. [2024-02-02 09:17:08,744 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3765432098765432 [2024-02-02 09:17:08,744 INFO L175 Difference]: Start difference. First operand has 324 places, 604 transitions, 14651 flow. Second operand 9 states and 244 transitions. [2024-02-02 09:17:08,744 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 635 transitions, 16173 flow [2024-02-02 09:17:09,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 635 transitions, 15750 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-02-02 09:17:09,424 INFO L231 Difference]: Finished difference. Result has 328 places, 610 transitions, 14505 flow [2024-02-02 09:17:09,425 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=14242, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=604, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=539, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=14505, PETRI_PLACES=328, PETRI_TRANSITIONS=610} [2024-02-02 09:17:09,425 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 252 predicate places. [2024-02-02 09:17:09,425 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 610 transitions, 14505 flow [2024-02-02 09:17:09,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 19.88888888888889) internal successors, (179), 9 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:17:09,426 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:17:09,426 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:17:09,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-02-02 09:17:09,426 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 58 more)] === [2024-02-02 09:17:09,426 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:17:09,426 INFO L85 PathProgramCache]: Analyzing trace with hash -24382764, now seen corresponding path program 4 times [2024-02-02 09:17:09,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:17:09,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608286939] [2024-02-02 09:17:09,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:17:09,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:17:09,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:17:09,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:17:09,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:17:09,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608286939] [2024-02-02 09:17:09,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608286939] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:17:09,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:17:09,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-02 09:17:09,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502009873] [2024-02-02 09:17:09,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:17:09,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-02 09:17:09,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:17:09,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-02 09:17:09,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-02-02 09:17:09,663 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 72 [2024-02-02 09:17:09,663 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 610 transitions, 14505 flow. Second operand has 9 states, 9 states have (on average 19.88888888888889) internal successors, (179), 9 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:17:09,664 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:17:09,664 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 72 [2024-02-02 09:17:09,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:17:11,199 INFO L124 PetriNetUnfolderBase]: 3162/6197 cut-off events. [2024-02-02 09:17:11,199 INFO L125 PetriNetUnfolderBase]: For 232057/232993 co-relation queries the response was YES. [2024-02-02 09:17:11,251 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54336 conditions, 6197 events. 3162/6197 cut-off events. For 232057/232993 co-relation queries the response was YES. Maximal size of possible extension queue 390. Compared 47961 event pairs, 642 based on Foata normal form. 76/6125 useless extension candidates. Maximal degree in co-relation 54232. Up to 5064 conditions per place. [2024-02-02 09:17:11,277 INFO L140 encePairwiseOnDemand]: 64/72 looper letters, 524 selfloop transitions, 68 changer transitions 0/636 dead transitions. [2024-02-02 09:17:11,277 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 636 transitions, 15942 flow [2024-02-02 09:17:11,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-02 09:17:11,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-02 09:17:11,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 221 transitions. [2024-02-02 09:17:11,278 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3836805555555556 [2024-02-02 09:17:11,278 INFO L175 Difference]: Start difference. First operand has 328 places, 610 transitions, 14505 flow. Second operand 8 states and 221 transitions. [2024-02-02 09:17:11,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 636 transitions, 15942 flow [2024-02-02 09:17:11,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 636 transitions, 15847 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-02-02 09:17:11,932 INFO L231 Difference]: Finished difference. Result has 331 places, 612 transitions, 14597 flow [2024-02-02 09:17:11,933 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=14410, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=610, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=542, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=14597, PETRI_PLACES=331, PETRI_TRANSITIONS=612} [2024-02-02 09:17:11,933 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 255 predicate places. [2024-02-02 09:17:11,933 INFO L495 AbstractCegarLoop]: Abstraction has has 331 places, 612 transitions, 14597 flow [2024-02-02 09:17:11,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 19.88888888888889) internal successors, (179), 9 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:17:11,934 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:17:11,934 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:17:11,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-02-02 09:17:11,934 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 58 more)] === [2024-02-02 09:17:11,934 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:17:11,934 INFO L85 PathProgramCache]: Analyzing trace with hash -1639016236, now seen corresponding path program 5 times [2024-02-02 09:17:11,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:17:11,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772019632] [2024-02-02 09:17:11,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:17:11,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:17:11,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:17:12,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:17:12,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:17:12,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772019632] [2024-02-02 09:17:12,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772019632] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:17:12,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:17:12,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-02 09:17:12,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505905992] [2024-02-02 09:17:12,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:17:12,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-02 09:17:12,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:17:12,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-02 09:17:12,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-02-02 09:17:12,192 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 72 [2024-02-02 09:17:12,192 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 612 transitions, 14597 flow. Second operand has 9 states, 9 states have (on average 19.88888888888889) internal successors, (179), 9 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:17:12,192 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:17:12,193 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 72 [2024-02-02 09:17:12,193 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:17:13,695 INFO L124 PetriNetUnfolderBase]: 3182/6221 cut-off events. [2024-02-02 09:17:13,695 INFO L125 PetriNetUnfolderBase]: For 234648/235598 co-relation queries the response was YES. [2024-02-02 09:17:13,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54765 conditions, 6221 events. 3182/6221 cut-off events. For 234648/235598 co-relation queries the response was YES. Maximal size of possible extension queue 392. Compared 48013 event pairs, 646 based on Foata normal form. 80/6149 useless extension candidates. Maximal degree in co-relation 54660. Up to 5024 conditions per place. [2024-02-02 09:17:13,769 INFO L140 encePairwiseOnDemand]: 64/72 looper letters, 521 selfloop transitions, 70 changer transitions 0/635 dead transitions. [2024-02-02 09:17:13,770 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 635 transitions, 15939 flow [2024-02-02 09:17:13,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-02 09:17:13,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-02 09:17:13,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 220 transitions. [2024-02-02 09:17:13,771 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3819444444444444 [2024-02-02 09:17:13,771 INFO L175 Difference]: Start difference. First operand has 331 places, 612 transitions, 14597 flow. Second operand 8 states and 220 transitions. [2024-02-02 09:17:13,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 635 transitions, 15939 flow [2024-02-02 09:17:14,408 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 635 transitions, 15830 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-02-02 09:17:14,423 INFO L231 Difference]: Finished difference. Result has 334 places, 612 transitions, 14642 flow [2024-02-02 09:17:14,424 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=14488, PETRI_DIFFERENCE_MINUEND_PLACES=326, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=612, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=542, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=14642, PETRI_PLACES=334, PETRI_TRANSITIONS=612} [2024-02-02 09:17:14,424 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 258 predicate places. [2024-02-02 09:17:14,424 INFO L495 AbstractCegarLoop]: Abstraction has has 334 places, 612 transitions, 14642 flow [2024-02-02 09:17:14,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 19.88888888888889) internal successors, (179), 9 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:17:14,425 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:17:14,425 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:17:14,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-02-02 09:17:14,426 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting P0Err9ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 58 more)] === [2024-02-02 09:17:14,426 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:17:14,426 INFO L85 PathProgramCache]: Analyzing trace with hash -1198648986, now seen corresponding path program 4 times [2024-02-02 09:17:14,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:17:14,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7118664] [2024-02-02 09:17:14,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:17:14,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:17:14,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:17:14,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:17:14,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:17:14,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7118664] [2024-02-02 09:17:14,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7118664] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:17:14,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:17:14,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-02 09:17:14,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392210496] [2024-02-02 09:17:14,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:17:14,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-02 09:17:14,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:17:14,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-02 09:17:14,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-02-02 09:17:14,676 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 72 [2024-02-02 09:17:14,676 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 334 places, 612 transitions, 14642 flow. Second operand has 8 states, 8 states have (on average 18.25) internal successors, (146), 8 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:17:14,676 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:17:14,676 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 72 [2024-02-02 09:17:14,676 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:17:16,277 INFO L124 PetriNetUnfolderBase]: 3305/6296 cut-off events. [2024-02-02 09:17:16,277 INFO L125 PetriNetUnfolderBase]: For 232402/233328 co-relation queries the response was YES. [2024-02-02 09:17:16,334 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56446 conditions, 6296 events. 3305/6296 cut-off events. For 232402/233328 co-relation queries the response was YES. Maximal size of possible extension queue 390. Compared 47194 event pairs, 492 based on Foata normal form. 63/6193 useless extension candidates. Maximal degree in co-relation 56340. Up to 2522 conditions per place. [2024-02-02 09:17:16,364 INFO L140 encePairwiseOnDemand]: 61/72 looper letters, 491 selfloop transitions, 173 changer transitions 2/700 dead transitions. [2024-02-02 09:17:16,364 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 700 transitions, 17157 flow [2024-02-02 09:17:16,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-02 09:17:16,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-02 09:17:16,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 241 transitions. [2024-02-02 09:17:16,365 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4184027777777778 [2024-02-02 09:17:16,366 INFO L175 Difference]: Start difference. First operand has 334 places, 612 transitions, 14642 flow. Second operand 8 states and 241 transitions. [2024-02-02 09:17:16,366 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 700 transitions, 17157 flow [2024-02-02 09:17:17,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 700 transitions, 17025 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-02-02 09:17:17,094 INFO L231 Difference]: Finished difference. Result has 337 places, 616 transitions, 15022 flow [2024-02-02 09:17:17,095 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=14510, PETRI_DIFFERENCE_MINUEND_PLACES=328, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=612, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=169, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=439, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=15022, PETRI_PLACES=337, PETRI_TRANSITIONS=616} [2024-02-02 09:17:17,095 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 261 predicate places. [2024-02-02 09:17:17,095 INFO L495 AbstractCegarLoop]: Abstraction has has 337 places, 616 transitions, 15022 flow [2024-02-02 09:17:17,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.25) internal successors, (146), 8 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:17:17,095 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:17:17,096 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:17:17,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-02-02 09:17:17,096 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting P0Err9ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 58 more)] === [2024-02-02 09:17:17,096 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:17:17,096 INFO L85 PathProgramCache]: Analyzing trace with hash -1537062696, now seen corresponding path program 5 times [2024-02-02 09:17:17,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:17:17,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517922601] [2024-02-02 09:17:17,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:17:17,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:17:17,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:17:17,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:17:17,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:17:17,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517922601] [2024-02-02 09:17:17,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517922601] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:17:17,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:17:17,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-02 09:17:17,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715107960] [2024-02-02 09:17:17,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:17:17,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-02 09:17:17,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:17:17,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-02 09:17:17,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-02-02 09:17:17,319 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 72 [2024-02-02 09:17:17,320 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 337 places, 616 transitions, 15022 flow. Second operand has 8 states, 8 states have (on average 18.25) internal successors, (146), 8 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:17:17,320 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:17:17,321 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 72 [2024-02-02 09:17:17,321 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:17:18,893 INFO L124 PetriNetUnfolderBase]: 3301/6293 cut-off events. [2024-02-02 09:17:18,894 INFO L125 PetriNetUnfolderBase]: For 244446/245373 co-relation queries the response was YES. [2024-02-02 09:17:18,951 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57587 conditions, 6293 events. 3301/6293 cut-off events. For 244446/245373 co-relation queries the response was YES. Maximal size of possible extension queue 389. Compared 47160 event pairs, 492 based on Foata normal form. 63/6191 useless extension candidates. Maximal degree in co-relation 57479. Up to 2522 conditions per place. [2024-02-02 09:17:18,984 INFO L140 encePairwiseOnDemand]: 61/72 looper letters, 496 selfloop transitions, 171 changer transitions 2/703 dead transitions. [2024-02-02 09:17:18,984 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 703 transitions, 17479 flow [2024-02-02 09:17:18,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-02 09:17:18,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-02 09:17:18,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 247 transitions. [2024-02-02 09:17:18,985 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4288194444444444 [2024-02-02 09:17:18,985 INFO L175 Difference]: Start difference. First operand has 337 places, 616 transitions, 15022 flow. Second operand 8 states and 247 transitions. [2024-02-02 09:17:18,985 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 703 transitions, 17479 flow [2024-02-02 09:17:19,795 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 337 places, 703 transitions, 17032 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-02-02 09:17:19,808 INFO L231 Difference]: Finished difference. Result has 338 places, 617 transitions, 14944 flow [2024-02-02 09:17:19,809 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=14578, PETRI_DIFFERENCE_MINUEND_PLACES=330, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=616, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=170, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=446, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=14944, PETRI_PLACES=338, PETRI_TRANSITIONS=617} [2024-02-02 09:17:19,809 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 262 predicate places. [2024-02-02 09:17:19,809 INFO L495 AbstractCegarLoop]: Abstraction has has 338 places, 617 transitions, 14944 flow [2024-02-02 09:17:19,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.25) internal successors, (146), 8 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:17:19,809 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:17:19,810 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:17:19,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-02-02 09:17:19,810 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting P0Err9ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 58 more)] === [2024-02-02 09:17:19,810 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:17:19,810 INFO L85 PathProgramCache]: Analyzing trace with hash -595062982, now seen corresponding path program 6 times [2024-02-02 09:17:19,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:17:19,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751716981] [2024-02-02 09:17:19,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:17:19,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:17:19,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:17:20,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:17:20,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:17:20,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751716981] [2024-02-02 09:17:20,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751716981] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:17:20,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:17:20,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-02 09:17:20,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753062969] [2024-02-02 09:17:20,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:17:20,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-02 09:17:20,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:17:20,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-02 09:17:20,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-02-02 09:17:20,080 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 72 [2024-02-02 09:17:20,081 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 338 places, 617 transitions, 14944 flow. Second operand has 8 states, 8 states have (on average 18.25) internal successors, (146), 8 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:17:20,081 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:17:20,081 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 72 [2024-02-02 09:17:20,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:17:22,080 INFO L124 PetriNetUnfolderBase]: 3283/6259 cut-off events. [2024-02-02 09:17:22,080 INFO L125 PetriNetUnfolderBase]: For 238173/239082 co-relation queries the response was YES. [2024-02-02 09:17:22,171 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57482 conditions, 6259 events. 3283/6259 cut-off events. For 238173/239082 co-relation queries the response was YES. Maximal size of possible extension queue 390. Compared 46914 event pairs, 448 based on Foata normal form. 45/6131 useless extension candidates. Maximal degree in co-relation 57373. Up to 2512 conditions per place. [2024-02-02 09:17:22,214 INFO L140 encePairwiseOnDemand]: 62/72 looper letters, 483 selfloop transitions, 177 changer transitions 2/696 dead transitions. [2024-02-02 09:17:22,214 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 696 transitions, 17302 flow [2024-02-02 09:17:22,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-02 09:17:22,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-02 09:17:22,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 238 transitions. [2024-02-02 09:17:22,215 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4131944444444444 [2024-02-02 09:17:22,216 INFO L175 Difference]: Start difference. First operand has 338 places, 617 transitions, 14944 flow. Second operand 8 states and 238 transitions. [2024-02-02 09:17:22,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 696 transitions, 17302 flow [2024-02-02 09:17:23,281 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 696 transitions, 17016 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-02-02 09:17:23,292 INFO L231 Difference]: Finished difference. Result has 342 places, 617 transitions, 15024 flow [2024-02-02 09:17:23,292 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=14658, PETRI_DIFFERENCE_MINUEND_PLACES=334, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=617, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=177, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=440, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=15024, PETRI_PLACES=342, PETRI_TRANSITIONS=617} [2024-02-02 09:17:23,292 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 266 predicate places. [2024-02-02 09:17:23,293 INFO L495 AbstractCegarLoop]: Abstraction has has 342 places, 617 transitions, 15024 flow [2024-02-02 09:17:23,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.25) internal successors, (146), 8 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:17:23,293 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:17:23,293 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:17:23,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-02-02 09:17:23,293 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting P0Err9ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 58 more)] === [2024-02-02 09:17:23,293 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:17:23,294 INFO L85 PathProgramCache]: Analyzing trace with hash 509976130, now seen corresponding path program 7 times [2024-02-02 09:17:23,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:17:23,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183808831] [2024-02-02 09:17:23,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:17:23,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:17:23,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:17:23,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:17:23,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:17:23,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183808831] [2024-02-02 09:17:23,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183808831] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:17:23,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:17:23,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-02 09:17:23,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127123415] [2024-02-02 09:17:23,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:17:23,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-02 09:17:23,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:17:23,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-02 09:17:23,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-02-02 09:17:23,520 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 72 [2024-02-02 09:17:23,521 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 617 transitions, 15024 flow. Second operand has 8 states, 8 states have (on average 18.25) internal successors, (146), 8 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:17:23,521 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:17:23,521 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 72 [2024-02-02 09:17:23,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:17:25,214 INFO L124 PetriNetUnfolderBase]: 3333/6333 cut-off events. [2024-02-02 09:17:25,215 INFO L125 PetriNetUnfolderBase]: For 247457/248482 co-relation queries the response was YES. [2024-02-02 09:17:25,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58143 conditions, 6333 events. 3333/6333 cut-off events. For 247457/248482 co-relation queries the response was YES. Maximal size of possible extension queue 398. Compared 47445 event pairs, 430 based on Foata normal form. 134/6323 useless extension candidates. Maximal degree in co-relation 58033. Up to 2540 conditions per place. [2024-02-02 09:17:25,294 INFO L140 encePairwiseOnDemand]: 54/72 looper letters, 412 selfloop transitions, 244 changer transitions 2/692 dead transitions. [2024-02-02 09:17:25,294 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 692 transitions, 17355 flow [2024-02-02 09:17:25,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-02 09:17:25,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-02 09:17:25,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 246 transitions. [2024-02-02 09:17:25,295 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4270833333333333 [2024-02-02 09:17:25,295 INFO L175 Difference]: Start difference. First operand has 342 places, 617 transitions, 15024 flow. Second operand 8 states and 246 transitions. [2024-02-02 09:17:25,295 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 692 transitions, 17355 flow [2024-02-02 09:17:25,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 345 places, 692 transitions, 17123 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-02-02 09:17:25,968 INFO L231 Difference]: Finished difference. Result has 347 places, 638 transitions, 15726 flow [2024-02-02 09:17:25,969 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=14805, PETRI_DIFFERENCE_MINUEND_PLACES=338, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=617, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=223, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=386, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=15726, PETRI_PLACES=347, PETRI_TRANSITIONS=638} [2024-02-02 09:17:25,969 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 271 predicate places. [2024-02-02 09:17:25,969 INFO L495 AbstractCegarLoop]: Abstraction has has 347 places, 638 transitions, 15726 flow [2024-02-02 09:17:25,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.25) internal successors, (146), 8 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:17:25,969 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:17:25,969 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:17:25,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-02-02 09:17:25,970 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting P0Err9ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 58 more)] === [2024-02-02 09:17:25,970 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:17:25,970 INFO L85 PathProgramCache]: Analyzing trace with hash 1137603224, now seen corresponding path program 8 times [2024-02-02 09:17:25,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:17:25,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936419184] [2024-02-02 09:17:25,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:17:25,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:17:25,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:17:26,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:17:26,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:17:26,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936419184] [2024-02-02 09:17:26,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936419184] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:17:26,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:17:26,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-02 09:17:26,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643756516] [2024-02-02 09:17:26,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:17:26,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-02 09:17:26,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:17:26,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-02 09:17:26,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-02-02 09:17:26,194 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 72 [2024-02-02 09:17:26,194 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 347 places, 638 transitions, 15726 flow. Second operand has 8 states, 8 states have (on average 18.25) internal successors, (146), 8 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:17:26,194 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:17:26,194 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 72 [2024-02-02 09:17:26,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:17:27,864 INFO L124 PetriNetUnfolderBase]: 3329/6328 cut-off events. [2024-02-02 09:17:27,864 INFO L125 PetriNetUnfolderBase]: For 261938/262977 co-relation queries the response was YES. [2024-02-02 09:17:27,908 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59850 conditions, 6328 events. 3329/6328 cut-off events. For 261938/262977 co-relation queries the response was YES. Maximal size of possible extension queue 399. Compared 47431 event pairs, 430 based on Foata normal form. 134/6317 useless extension candidates. Maximal degree in co-relation 59738. Up to 2540 conditions per place. [2024-02-02 09:17:27,930 INFO L140 encePairwiseOnDemand]: 54/72 looper letters, 422 selfloop transitions, 237 changer transitions 2/695 dead transitions. [2024-02-02 09:17:27,931 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 695 transitions, 17823 flow [2024-02-02 09:17:27,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-02 09:17:27,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-02 09:17:27,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 252 transitions. [2024-02-02 09:17:27,932 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4375 [2024-02-02 09:17:27,932 INFO L175 Difference]: Start difference. First operand has 347 places, 638 transitions, 15726 flow. Second operand 8 states and 252 transitions. [2024-02-02 09:17:27,932 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 695 transitions, 17823 flow [2024-02-02 09:17:28,584 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 349 places, 695 transitions, 17511 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-02-02 09:17:28,595 INFO L231 Difference]: Finished difference. Result has 350 places, 639 transitions, 15925 flow [2024-02-02 09:17:28,596 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=15424, PETRI_DIFFERENCE_MINUEND_PLACES=342, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=638, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=236, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=402, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=15925, PETRI_PLACES=350, PETRI_TRANSITIONS=639} [2024-02-02 09:17:28,596 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 274 predicate places. [2024-02-02 09:17:28,596 INFO L495 AbstractCegarLoop]: Abstraction has has 350 places, 639 transitions, 15925 flow [2024-02-02 09:17:28,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.25) internal successors, (146), 8 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:17:28,597 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:17:28,597 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:17:28,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-02-02 09:17:28,597 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting P0Err9ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 58 more)] === [2024-02-02 09:17:28,597 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:17:28,597 INFO L85 PathProgramCache]: Analyzing trace with hash 1950564756, now seen corresponding path program 9 times [2024-02-02 09:17:28,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:17:28,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664647364] [2024-02-02 09:17:28,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:17:28,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:17:28,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:17:28,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:17:28,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:17:28,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664647364] [2024-02-02 09:17:28,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664647364] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:17:28,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:17:28,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-02 09:17:28,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698591952] [2024-02-02 09:17:28,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:17:28,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-02 09:17:28,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:17:28,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-02 09:17:28,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-02-02 09:17:28,829 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 72 [2024-02-02 09:17:28,829 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 350 places, 639 transitions, 15925 flow. Second operand has 8 states, 8 states have (on average 18.25) internal successors, (146), 8 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:17:28,829 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:17:28,829 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 72 [2024-02-02 09:17:28,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:17:30,492 INFO L124 PetriNetUnfolderBase]: 3431/6531 cut-off events. [2024-02-02 09:17:30,493 INFO L125 PetriNetUnfolderBase]: For 272946/273911 co-relation queries the response was YES. [2024-02-02 09:17:30,550 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61516 conditions, 6531 events. 3431/6531 cut-off events. For 272946/273911 co-relation queries the response was YES. Maximal size of possible extension queue 401. Compared 49100 event pairs, 416 based on Foata normal form. 90/6463 useless extension candidates. Maximal degree in co-relation 61404. Up to 2582 conditions per place. [2024-02-02 09:17:30,580 INFO L140 encePairwiseOnDemand]: 55/72 looper letters, 425 selfloop transitions, 249 changer transitions 2/710 dead transitions. [2024-02-02 09:17:30,580 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 710 transitions, 18431 flow [2024-02-02 09:17:30,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-02 09:17:30,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-02 09:17:30,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 245 transitions. [2024-02-02 09:17:30,581 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4253472222222222 [2024-02-02 09:17:30,581 INFO L175 Difference]: Start difference. First operand has 350 places, 639 transitions, 15925 flow. Second operand 8 states and 245 transitions. [2024-02-02 09:17:30,581 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 710 transitions, 18431 flow [2024-02-02 09:17:31,345 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 350 places, 710 transitions, 17921 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-02-02 09:17:31,356 INFO L231 Difference]: Finished difference. Result has 352 places, 656 transitions, 16464 flow [2024-02-02 09:17:31,357 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=15451, PETRI_DIFFERENCE_MINUEND_PLACES=343, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=639, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=232, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=401, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=16464, PETRI_PLACES=352, PETRI_TRANSITIONS=656} [2024-02-02 09:17:31,357 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 276 predicate places. [2024-02-02 09:17:31,357 INFO L495 AbstractCegarLoop]: Abstraction has has 352 places, 656 transitions, 16464 flow [2024-02-02 09:17:31,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.25) internal successors, (146), 8 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:17:31,358 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:17:31,358 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:17:31,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-02-02 09:17:31,358 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting P0Err9ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 58 more)] === [2024-02-02 09:17:31,358 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:17:31,358 INFO L85 PathProgramCache]: Analyzing trace with hash -801491330, now seen corresponding path program 10 times [2024-02-02 09:17:31,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:17:31,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476715418] [2024-02-02 09:17:31,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:17:31,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:17:31,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:17:31,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:17:31,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:17:31,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476715418] [2024-02-02 09:17:31,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476715418] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:17:31,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:17:31,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-02 09:17:31,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188663829] [2024-02-02 09:17:31,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:17:31,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-02 09:17:31,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:17:31,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-02 09:17:31,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-02-02 09:17:31,577 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 72 [2024-02-02 09:17:31,578 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 656 transitions, 16464 flow. Second operand has 8 states, 8 states have (on average 18.25) internal successors, (146), 8 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:17:31,578 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:17:31,578 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 72 [2024-02-02 09:17:31,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:17:33,375 INFO L124 PetriNetUnfolderBase]: 3643/6931 cut-off events. [2024-02-02 09:17:33,375 INFO L125 PetriNetUnfolderBase]: For 279228/280277 co-relation queries the response was YES. [2024-02-02 09:17:33,430 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64699 conditions, 6931 events. 3643/6931 cut-off events. For 279228/280277 co-relation queries the response was YES. Maximal size of possible extension queue 414. Compared 52767 event pairs, 406 based on Foata normal form. 82/6855 useless extension candidates. Maximal degree in co-relation 64586. Up to 2664 conditions per place. [2024-02-02 09:17:33,456 INFO L140 encePairwiseOnDemand]: 54/72 looper letters, 440 selfloop transitions, 263 changer transitions 2/739 dead transitions. [2024-02-02 09:17:33,456 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 359 places, 739 transitions, 19165 flow [2024-02-02 09:17:33,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-02 09:17:33,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-02 09:17:33,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 251 transitions. [2024-02-02 09:17:33,457 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4357638888888889 [2024-02-02 09:17:33,458 INFO L175 Difference]: Start difference. First operand has 352 places, 656 transitions, 16464 flow. Second operand 8 states and 251 transitions. [2024-02-02 09:17:33,458 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 359 places, 739 transitions, 19165 flow [2024-02-02 09:17:34,184 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 356 places, 739 transitions, 18954 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-02-02 09:17:34,196 INFO L231 Difference]: Finished difference. Result has 359 places, 680 transitions, 17502 flow [2024-02-02 09:17:34,196 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=16271, PETRI_DIFFERENCE_MINUEND_PLACES=349, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=656, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=239, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=411, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=17502, PETRI_PLACES=359, PETRI_TRANSITIONS=680} [2024-02-02 09:17:34,197 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 283 predicate places. [2024-02-02 09:17:34,197 INFO L495 AbstractCegarLoop]: Abstraction has has 359 places, 680 transitions, 17502 flow [2024-02-02 09:17:34,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.25) internal successors, (146), 8 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:17:34,197 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:17:34,197 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:17:34,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-02-02 09:17:34,197 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting P0Err9ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 58 more)] === [2024-02-02 09:17:34,197 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:17:34,198 INFO L85 PathProgramCache]: Analyzing trace with hash 1507060252, now seen corresponding path program 11 times [2024-02-02 09:17:34,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:17:34,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153688792] [2024-02-02 09:17:34,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:17:34,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:17:34,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:17:34,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:17:34,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:17:34,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153688792] [2024-02-02 09:17:34,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153688792] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:17:34,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:17:34,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-02 09:17:34,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677111012] [2024-02-02 09:17:34,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:17:34,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-02 09:17:34,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:17:34,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-02 09:17:34,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-02-02 09:17:34,407 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 72 [2024-02-02 09:17:34,408 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 680 transitions, 17502 flow. Second operand has 8 states, 8 states have (on average 18.25) internal successors, (146), 8 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:17:34,408 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:17:34,408 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 72 [2024-02-02 09:17:34,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:17:36,593 INFO L124 PetriNetUnfolderBase]: 3639/6927 cut-off events. [2024-02-02 09:17:36,594 INFO L125 PetriNetUnfolderBase]: For 295938/296987 co-relation queries the response was YES. [2024-02-02 09:17:36,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66036 conditions, 6927 events. 3639/6927 cut-off events. For 295938/296987 co-relation queries the response was YES. Maximal size of possible extension queue 414. Compared 52784 event pairs, 418 based on Foata normal form. 82/6851 useless extension candidates. Maximal degree in co-relation 65920. Up to 2664 conditions per place. [2024-02-02 09:17:36,692 INFO L140 encePairwiseOnDemand]: 54/72 looper letters, 430 selfloop transitions, 271 changer transitions 2/737 dead transitions. [2024-02-02 09:17:36,692 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 366 places, 737 transitions, 19650 flow [2024-02-02 09:17:36,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-02 09:17:36,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-02 09:17:36,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 252 transitions. [2024-02-02 09:17:36,693 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4375 [2024-02-02 09:17:36,693 INFO L175 Difference]: Start difference. First operand has 359 places, 680 transitions, 17502 flow. Second operand 8 states and 252 transitions. [2024-02-02 09:17:36,693 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 366 places, 737 transitions, 19650 flow [2024-02-02 09:17:37,526 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 362 places, 737 transitions, 19311 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-02-02 09:17:37,542 INFO L231 Difference]: Finished difference. Result has 364 places, 682 transitions, 17834 flow [2024-02-02 09:17:37,543 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=17164, PETRI_DIFFERENCE_MINUEND_PLACES=355, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=680, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=269, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=410, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=17834, PETRI_PLACES=364, PETRI_TRANSITIONS=682} [2024-02-02 09:17:37,543 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 288 predicate places. [2024-02-02 09:17:37,543 INFO L495 AbstractCegarLoop]: Abstraction has has 364 places, 682 transitions, 17834 flow [2024-02-02 09:17:37,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.25) internal successors, (146), 8 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:17:37,543 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:17:37,544 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:17:37,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-02-02 09:17:37,544 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting P0Err9ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 58 more)] === [2024-02-02 09:17:37,544 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:17:37,544 INFO L85 PathProgramCache]: Analyzing trace with hash 1369505346, now seen corresponding path program 12 times [2024-02-02 09:17:37,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:17:37,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602830389] [2024-02-02 09:17:37,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:17:37,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:17:37,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:17:37,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:17:37,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:17:37,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602830389] [2024-02-02 09:17:37,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602830389] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:17:37,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:17:37,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-02 09:17:37,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111866675] [2024-02-02 09:17:37,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:17:37,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-02 09:17:37,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:17:37,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-02 09:17:37,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-02-02 09:17:37,774 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 72 [2024-02-02 09:17:37,774 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 364 places, 682 transitions, 17834 flow. Second operand has 8 states, 8 states have (on average 18.25) internal successors, (146), 8 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:17:37,774 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:17:37,774 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 72 [2024-02-02 09:17:37,774 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:17:39,743 INFO L124 PetriNetUnfolderBase]: 3685/7016 cut-off events. [2024-02-02 09:17:39,743 INFO L125 PetriNetUnfolderBase]: For 312801/313888 co-relation queries the response was YES. [2024-02-02 09:17:39,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67144 conditions, 7016 events. 3685/7016 cut-off events. For 312801/313888 co-relation queries the response was YES. Maximal size of possible extension queue 420. Compared 53585 event pairs, 418 based on Foata normal form. 82/6939 useless extension candidates. Maximal degree in co-relation 67026. Up to 2682 conditions per place. [2024-02-02 09:17:39,844 INFO L140 encePairwiseOnDemand]: 54/72 looper letters, 430 selfloop transitions, 273 changer transitions 2/739 dead transitions. [2024-02-02 09:17:39,844 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 371 places, 739 transitions, 19982 flow [2024-02-02 09:17:39,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-02 09:17:39,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-02 09:17:39,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 242 transitions. [2024-02-02 09:17:39,845 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4201388888888889 [2024-02-02 09:17:39,845 INFO L175 Difference]: Start difference. First operand has 364 places, 682 transitions, 17834 flow. Second operand 8 states and 242 transitions. [2024-02-02 09:17:39,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 371 places, 739 transitions, 19982 flow [2024-02-02 09:17:40,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 364 places, 739 transitions, 19303 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-02-02 09:17:40,688 INFO L231 Difference]: Finished difference. Result has 366 places, 688 transitions, 17887 flow [2024-02-02 09:17:40,688 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=17167, PETRI_DIFFERENCE_MINUEND_PLACES=357, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=682, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=267, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=414, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=17887, PETRI_PLACES=366, PETRI_TRANSITIONS=688} [2024-02-02 09:17:40,688 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 290 predicate places. [2024-02-02 09:17:40,689 INFO L495 AbstractCegarLoop]: Abstraction has has 366 places, 688 transitions, 17887 flow [2024-02-02 09:17:40,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.25) internal successors, (146), 8 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:17:40,689 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:17:40,689 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:17:40,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-02-02 09:17:40,689 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting P0Err9ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 58 more)] === [2024-02-02 09:17:40,689 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:17:40,690 INFO L85 PathProgramCache]: Analyzing trace with hash 90314084, now seen corresponding path program 13 times [2024-02-02 09:17:40,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:17:40,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500870319] [2024-02-02 09:17:40,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:17:40,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:17:40,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:17:40,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:17:40,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:17:40,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500870319] [2024-02-02 09:17:40,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500870319] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:17:40,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:17:40,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-02 09:17:40,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229287382] [2024-02-02 09:17:40,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:17:40,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-02 09:17:40,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:17:40,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-02 09:17:40,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-02-02 09:17:40,904 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 72 [2024-02-02 09:17:40,904 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 366 places, 688 transitions, 17887 flow. Second operand has 8 states, 8 states have (on average 18.25) internal successors, (146), 8 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:17:40,904 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:17:40,904 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 72 [2024-02-02 09:17:40,904 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:17:42,768 INFO L124 PetriNetUnfolderBase]: 3813/7198 cut-off events. [2024-02-02 09:17:42,768 INFO L125 PetriNetUnfolderBase]: For 310238/311345 co-relation queries the response was YES. [2024-02-02 09:17:42,830 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67888 conditions, 7198 events. 3813/7198 cut-off events. For 310238/311345 co-relation queries the response was YES. Maximal size of possible extension queue 417. Compared 54650 event pairs, 347 based on Foata normal form. 74/7115 useless extension candidates. Maximal degree in co-relation 67768. Up to 2726 conditions per place. [2024-02-02 09:17:42,861 INFO L140 encePairwiseOnDemand]: 55/72 looper letters, 419 selfloop transitions, 288 changer transitions 2/743 dead transitions. [2024-02-02 09:17:42,862 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 373 places, 743 transitions, 20030 flow [2024-02-02 09:17:42,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-02 09:17:42,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-02 09:17:42,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 239 transitions. [2024-02-02 09:17:42,863 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4149305555555556 [2024-02-02 09:17:42,863 INFO L175 Difference]: Start difference. First operand has 366 places, 688 transitions, 17887 flow. Second operand 8 states and 239 transitions. [2024-02-02 09:17:42,863 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 373 places, 743 transitions, 20030 flow [2024-02-02 09:17:43,753 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 369 places, 743 transitions, 19606 flow, removed 15 selfloop flow, removed 4 redundant places. [2024-02-02 09:17:43,765 INFO L231 Difference]: Finished difference. Result has 371 places, 702 transitions, 18430 flow [2024-02-02 09:17:43,766 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=17482, PETRI_DIFFERENCE_MINUEND_PLACES=362, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=688, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=274, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=409, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=18430, PETRI_PLACES=371, PETRI_TRANSITIONS=702} [2024-02-02 09:17:43,766 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 295 predicate places. [2024-02-02 09:17:43,766 INFO L495 AbstractCegarLoop]: Abstraction has has 371 places, 702 transitions, 18430 flow [2024-02-02 09:17:43,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.25) internal successors, (146), 8 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:17:43,766 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:17:43,767 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:17:43,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-02-02 09:17:43,767 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting P0Err9ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 58 more)] === [2024-02-02 09:17:43,767 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:17:43,767 INFO L85 PathProgramCache]: Analyzing trace with hash 917963354, now seen corresponding path program 1 times [2024-02-02 09:17:43,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:17:43,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468196996] [2024-02-02 09:17:43,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:17:43,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:17:43,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:17:43,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:17:43,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:17:43,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468196996] [2024-02-02 09:17:43,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468196996] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:17:43,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:17:43,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-02 09:17:43,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49633423] [2024-02-02 09:17:43,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:17:43,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-02 09:17:43,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:17:43,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-02 09:17:43,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-02-02 09:17:44,016 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 72 [2024-02-02 09:17:44,017 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 371 places, 702 transitions, 18430 flow. Second operand has 9 states, 9 states have (on average 18.22222222222222) internal successors, (164), 9 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:17:44,017 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:17:44,017 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 72 [2024-02-02 09:17:44,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:17:46,337 INFO L124 PetriNetUnfolderBase]: 3915/7653 cut-off events. [2024-02-02 09:17:46,338 INFO L125 PetriNetUnfolderBase]: For 330057/331214 co-relation queries the response was YES. [2024-02-02 09:17:46,397 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72646 conditions, 7653 events. 3915/7653 cut-off events. For 330057/331214 co-relation queries the response was YES. Maximal size of possible extension queue 432. Compared 60786 event pairs, 830 based on Foata normal form. 56/7538 useless extension candidates. Maximal degree in co-relation 72524. Up to 2896 conditions per place. [2024-02-02 09:17:46,428 INFO L140 encePairwiseOnDemand]: 60/72 looper letters, 624 selfloop transitions, 145 changer transitions 34/837 dead transitions. [2024-02-02 09:17:46,428 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 378 places, 837 transitions, 21959 flow [2024-02-02 09:17:46,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-02 09:17:46,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-02 09:17:46,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 249 transitions. [2024-02-02 09:17:46,429 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4322916666666667 [2024-02-02 09:17:46,429 INFO L175 Difference]: Start difference. First operand has 371 places, 702 transitions, 18430 flow. Second operand 8 states and 249 transitions. [2024-02-02 09:17:46,429 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 378 places, 837 transitions, 21959 flow [2024-02-02 09:17:47,378 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 370 places, 837 transitions, 21298 flow, removed 60 selfloop flow, removed 8 redundant places. [2024-02-02 09:17:47,391 INFO L231 Difference]: Finished difference. Result has 373 places, 684 transitions, 17766 flow [2024-02-02 09:17:47,391 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=17829, PETRI_DIFFERENCE_MINUEND_PLACES=363, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=702, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=136, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=562, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=17766, PETRI_PLACES=373, PETRI_TRANSITIONS=684} [2024-02-02 09:17:47,391 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 297 predicate places. [2024-02-02 09:17:47,392 INFO L495 AbstractCegarLoop]: Abstraction has has 373 places, 684 transitions, 17766 flow [2024-02-02 09:17:47,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 18.22222222222222) internal successors, (164), 9 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:17:47,392 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:17:47,392 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:17:47,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-02-02 09:17:47,392 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting P0Err9ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 58 more)] === [2024-02-02 09:17:47,392 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:17:47,393 INFO L85 PathProgramCache]: Analyzing trace with hash 858549416, now seen corresponding path program 2 times [2024-02-02 09:17:47,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:17:47,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180928404] [2024-02-02 09:17:47,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:17:47,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:17:47,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:17:47,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:17:47,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:17:47,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180928404] [2024-02-02 09:17:47,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180928404] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:17:47,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:17:47,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-02 09:17:47,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136301939] [2024-02-02 09:17:47,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:17:47,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-02 09:17:47,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:17:47,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-02 09:17:47,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-02-02 09:17:47,666 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 72 [2024-02-02 09:17:47,667 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 373 places, 684 transitions, 17766 flow. Second operand has 9 states, 9 states have (on average 18.22222222222222) internal successors, (164), 9 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:17:47,667 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:17:47,667 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 72 [2024-02-02 09:17:47,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:17:49,910 INFO L124 PetriNetUnfolderBase]: 3791/7481 cut-off events. [2024-02-02 09:17:49,911 INFO L125 PetriNetUnfolderBase]: For 314565/315760 co-relation queries the response was YES. [2024-02-02 09:17:49,996 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69715 conditions, 7481 events. 3791/7481 cut-off events. For 314565/315760 co-relation queries the response was YES. Maximal size of possible extension queue 404. Compared 59743 event pairs, 822 based on Foata normal form. 48/7358 useless extension candidates. Maximal degree in co-relation 69592. Up to 2896 conditions per place. [2024-02-02 09:17:50,033 INFO L140 encePairwiseOnDemand]: 60/72 looper letters, 638 selfloop transitions, 131 changer transitions 5/808 dead transitions. [2024-02-02 09:17:50,033 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 380 places, 808 transitions, 21007 flow [2024-02-02 09:17:50,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-02 09:17:50,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-02 09:17:50,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 244 transitions. [2024-02-02 09:17:50,034 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4236111111111111 [2024-02-02 09:17:50,034 INFO L175 Difference]: Start difference. First operand has 373 places, 684 transitions, 17766 flow. Second operand 8 states and 244 transitions. [2024-02-02 09:17:50,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 380 places, 808 transitions, 21007 flow [2024-02-02 09:17:51,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 375 places, 808 transitions, 20764 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-02-02 09:17:51,083 INFO L231 Difference]: Finished difference. Result has 376 places, 680 transitions, 17729 flow [2024-02-02 09:17:51,084 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=17523, PETRI_DIFFERENCE_MINUEND_PLACES=368, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=684, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=131, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=553, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=17729, PETRI_PLACES=376, PETRI_TRANSITIONS=680} [2024-02-02 09:17:51,084 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 300 predicate places. [2024-02-02 09:17:51,084 INFO L495 AbstractCegarLoop]: Abstraction has has 376 places, 680 transitions, 17729 flow [2024-02-02 09:17:51,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 18.22222222222222) internal successors, (164), 9 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:17:51,085 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:17:51,085 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:17:51,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-02-02 09:17:51,085 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting P0Err9ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 58 more)] === [2024-02-02 09:17:51,085 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:17:51,086 INFO L85 PathProgramCache]: Analyzing trace with hash 1765100518, now seen corresponding path program 3 times [2024-02-02 09:17:51,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:17:51,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521901083] [2024-02-02 09:17:51,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:17:51,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:17:51,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:17:51,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:17:51,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:17:51,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521901083] [2024-02-02 09:17:51,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521901083] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:17:51,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:17:51,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-02 09:17:51,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277033578] [2024-02-02 09:17:51,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:17:51,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-02 09:17:51,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:17:51,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-02 09:17:51,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-02-02 09:17:51,369 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 72 [2024-02-02 09:17:51,370 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 376 places, 680 transitions, 17729 flow. Second operand has 9 states, 9 states have (on average 18.22222222222222) internal successors, (164), 9 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:17:51,370 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:17:51,370 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 72 [2024-02-02 09:17:51,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:17:53,498 INFO L124 PetriNetUnfolderBase]: 3794/7554 cut-off events. [2024-02-02 09:17:53,498 INFO L125 PetriNetUnfolderBase]: For 316844/318031 co-relation queries the response was YES. [2024-02-02 09:17:53,586 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70141 conditions, 7554 events. 3794/7554 cut-off events. For 316844/318031 co-relation queries the response was YES. Maximal size of possible extension queue 402. Compared 60974 event pairs, 835 based on Foata normal form. 48/7431 useless extension candidates. Maximal degree in co-relation 70017. Up to 2896 conditions per place. [2024-02-02 09:17:53,621 INFO L140 encePairwiseOnDemand]: 61/72 looper letters, 657 selfloop transitions, 109 changer transitions 3/803 dead transitions. [2024-02-02 09:17:53,622 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 383 places, 803 transitions, 20938 flow [2024-02-02 09:17:53,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-02 09:17:53,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-02 09:17:53,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 245 transitions. [2024-02-02 09:17:53,628 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4253472222222222 [2024-02-02 09:17:53,629 INFO L175 Difference]: Start difference. First operand has 376 places, 680 transitions, 17729 flow. Second operand 8 states and 245 transitions. [2024-02-02 09:17:53,629 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 383 places, 803 transitions, 20938 flow [2024-02-02 09:17:54,675 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 378 places, 803 transitions, 20714 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-02-02 09:17:54,686 INFO L231 Difference]: Finished difference. Result has 379 places, 678 transitions, 17696 flow [2024-02-02 09:17:54,687 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=17505, PETRI_DIFFERENCE_MINUEND_PLACES=371, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=680, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=571, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=17696, PETRI_PLACES=379, PETRI_TRANSITIONS=678} [2024-02-02 09:17:54,687 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 303 predicate places. [2024-02-02 09:17:54,687 INFO L495 AbstractCegarLoop]: Abstraction has has 379 places, 678 transitions, 17696 flow [2024-02-02 09:17:54,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 18.22222222222222) internal successors, (164), 9 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:17:54,687 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:17:54,688 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:17:54,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-02-02 09:17:54,688 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 58 more)] === [2024-02-02 09:17:54,688 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:17:54,688 INFO L85 PathProgramCache]: Analyzing trace with hash -697026474, now seen corresponding path program 1 times [2024-02-02 09:17:54,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:17:54,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633873153] [2024-02-02 09:17:54,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:17:54,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:17:54,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:17:54,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:17:54,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:17:54,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633873153] [2024-02-02 09:17:54,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633873153] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:17:54,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:17:54,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-02 09:17:54,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159929849] [2024-02-02 09:17:54,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:17:54,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-02 09:17:54,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:17:54,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-02 09:17:54,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-02-02 09:17:54,976 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 72 [2024-02-02 09:17:54,976 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 379 places, 678 transitions, 17696 flow. Second operand has 9 states, 9 states have (on average 20.11111111111111) internal successors, (181), 9 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:17:54,976 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:17:54,977 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 72 [2024-02-02 09:17:54,977 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:17:57,173 INFO L124 PetriNetUnfolderBase]: 3672/7513 cut-off events. [2024-02-02 09:17:57,173 INFO L125 PetriNetUnfolderBase]: For 325465/326527 co-relation queries the response was YES. [2024-02-02 09:17:57,249 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69353 conditions, 7513 events. 3672/7513 cut-off events. For 325465/326527 co-relation queries the response was YES. Maximal size of possible extension queue 405. Compared 62143 event pairs, 767 based on Foata normal form. 127/7460 useless extension candidates. Maximal degree in co-relation 69228. Up to 2745 conditions per place. [2024-02-02 09:17:57,279 INFO L140 encePairwiseOnDemand]: 61/72 looper letters, 447 selfloop transitions, 183 changer transitions 36/712 dead transitions. [2024-02-02 09:17:57,280 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 384 places, 712 transitions, 19495 flow [2024-02-02 09:17:57,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-02 09:17:57,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-02 09:17:57,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 209 transitions. [2024-02-02 09:17:57,281 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4146825396825397 [2024-02-02 09:17:57,281 INFO L175 Difference]: Start difference. First operand has 379 places, 678 transitions, 17696 flow. Second operand 7 states and 209 transitions. [2024-02-02 09:17:57,282 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 384 places, 712 transitions, 19495 flow [2024-02-02 09:17:58,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 378 places, 712 transitions, 19172 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-02-02 09:17:58,335 INFO L231 Difference]: Finished difference. Result has 380 places, 641 transitions, 17068 flow [2024-02-02 09:17:58,336 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=17356, PETRI_DIFFERENCE_MINUEND_PLACES=372, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=676, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=183, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=493, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=17068, PETRI_PLACES=380, PETRI_TRANSITIONS=641} [2024-02-02 09:17:58,336 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 304 predicate places. [2024-02-02 09:17:58,336 INFO L495 AbstractCegarLoop]: Abstraction has has 380 places, 641 transitions, 17068 flow [2024-02-02 09:17:58,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 20.11111111111111) internal successors, (181), 9 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:17:58,337 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:17:58,337 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:17:58,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-02-02 09:17:58,337 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting P0Err9ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 58 more)] === [2024-02-02 09:17:58,337 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:17:58,337 INFO L85 PathProgramCache]: Analyzing trace with hash -210288384, now seen corresponding path program 4 times [2024-02-02 09:17:58,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:17:58,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198677379] [2024-02-02 09:17:58,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:17:58,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:17:58,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:17:58,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:17:58,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:17:58,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198677379] [2024-02-02 09:17:58,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198677379] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:17:58,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:17:58,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-02 09:17:58,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535211516] [2024-02-02 09:17:58,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:17:58,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-02 09:17:58,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:17:58,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-02 09:17:58,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-02-02 09:17:58,641 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 72 [2024-02-02 09:17:58,641 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 380 places, 641 transitions, 17068 flow. Second operand has 9 states, 9 states have (on average 18.22222222222222) internal successors, (164), 9 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:17:58,642 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:17:58,642 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 72 [2024-02-02 09:17:58,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:18:00,834 INFO L124 PetriNetUnfolderBase]: 3578/7168 cut-off events. [2024-02-02 09:18:00,834 INFO L125 PetriNetUnfolderBase]: For 316341/317356 co-relation queries the response was YES. [2024-02-02 09:18:00,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66975 conditions, 7168 events. 3578/7168 cut-off events. For 316341/317356 co-relation queries the response was YES. Maximal size of possible extension queue 393. Compared 57506 event pairs, 840 based on Foata normal form. 42/7040 useless extension candidates. Maximal degree in co-relation 66849. Up to 2849 conditions per place. [2024-02-02 09:18:00,914 INFO L140 encePairwiseOnDemand]: 60/72 looper letters, 557 selfloop transitions, 137 changer transitions 19/747 dead transitions. [2024-02-02 09:18:00,914 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 387 places, 747 transitions, 19963 flow [2024-02-02 09:18:00,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-02 09:18:00,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-02 09:18:00,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 239 transitions. [2024-02-02 09:18:00,915 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4149305555555556 [2024-02-02 09:18:00,915 INFO L175 Difference]: Start difference. First operand has 380 places, 641 transitions, 17068 flow. Second operand 8 states and 239 transitions. [2024-02-02 09:18:00,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 387 places, 747 transitions, 19963 flow [2024-02-02 09:18:01,893 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 379 places, 747 transitions, 19429 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-02-02 09:18:01,907 INFO L231 Difference]: Finished difference. Result has 380 places, 625 transitions, 16492 flow [2024-02-02 09:18:01,907 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=16546, PETRI_DIFFERENCE_MINUEND_PLACES=372, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=641, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=137, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=504, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=16492, PETRI_PLACES=380, PETRI_TRANSITIONS=625} [2024-02-02 09:18:01,907 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 304 predicate places. [2024-02-02 09:18:01,908 INFO L495 AbstractCegarLoop]: Abstraction has has 380 places, 625 transitions, 16492 flow [2024-02-02 09:18:01,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 18.22222222222222) internal successors, (164), 9 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:18:01,908 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:18:01,908 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:18:01,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-02-02 09:18:01,908 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 58 more)] === [2024-02-02 09:18:01,909 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:18:01,909 INFO L85 PathProgramCache]: Analyzing trace with hash 1739249808, now seen corresponding path program 2 times [2024-02-02 09:18:01,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:18:01,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096142212] [2024-02-02 09:18:01,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:18:01,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:18:01,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:18:02,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:18:02,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:18:02,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096142212] [2024-02-02 09:18:02,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096142212] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:18:02,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:18:02,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-02 09:18:02,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81234336] [2024-02-02 09:18:02,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:18:02,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-02 09:18:02,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:18:02,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-02 09:18:02,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-02-02 09:18:02,186 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 72 [2024-02-02 09:18:02,187 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 380 places, 625 transitions, 16492 flow. Second operand has 9 states, 9 states have (on average 20.11111111111111) internal successors, (181), 9 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:18:02,187 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:18:02,187 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 72 [2024-02-02 09:18:02,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:18:04,138 INFO L124 PetriNetUnfolderBase]: 3316/6927 cut-off events. [2024-02-02 09:18:04,138 INFO L125 PetriNetUnfolderBase]: For 301588/302559 co-relation queries the response was YES. [2024-02-02 09:18:04,214 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63250 conditions, 6927 events. 3316/6927 cut-off events. For 301588/302559 co-relation queries the response was YES. Maximal size of possible extension queue 378. Compared 57145 event pairs, 717 based on Foata normal form. 81/6841 useless extension candidates. Maximal degree in co-relation 63125. Up to 3320 conditions per place. [2024-02-02 09:18:04,243 INFO L140 encePairwiseOnDemand]: 63/72 looper letters, 425 selfloop transitions, 128 changer transitions 56/651 dead transitions. [2024-02-02 09:18:04,243 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 386 places, 651 transitions, 17966 flow [2024-02-02 09:18:04,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-02 09:18:04,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-02 09:18:04,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 203 transitions. [2024-02-02 09:18:04,244 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4027777777777778 [2024-02-02 09:18:04,244 INFO L175 Difference]: Start difference. First operand has 380 places, 625 transitions, 16492 flow. Second operand 7 states and 203 transitions. [2024-02-02 09:18:04,245 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 386 places, 651 transitions, 17966 flow [2024-02-02 09:18:05,175 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 375 places, 651 transitions, 17627 flow, removed 8 selfloop flow, removed 11 redundant places. [2024-02-02 09:18:05,185 INFO L231 Difference]: Finished difference. Result has 376 places, 569 transitions, 15282 flow [2024-02-02 09:18:05,186 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=16153, PETRI_DIFFERENCE_MINUEND_PLACES=369, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=625, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=128, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=497, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=15282, PETRI_PLACES=376, PETRI_TRANSITIONS=569} [2024-02-02 09:18:05,186 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 300 predicate places. [2024-02-02 09:18:05,186 INFO L495 AbstractCegarLoop]: Abstraction has has 376 places, 569 transitions, 15282 flow [2024-02-02 09:18:05,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 20.11111111111111) internal successors, (181), 9 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:18:05,187 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:18:05,187 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:18:05,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-02-02 09:18:05,187 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 58 more)] === [2024-02-02 09:18:05,187 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:18:05,188 INFO L85 PathProgramCache]: Analyzing trace with hash -423490332, now seen corresponding path program 3 times [2024-02-02 09:18:05,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:18:05,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053988083] [2024-02-02 09:18:05,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:18:05,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:18:05,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:18:05,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:18:05,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:18:05,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053988083] [2024-02-02 09:18:05,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053988083] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:18:05,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:18:05,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-02 09:18:05,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755280279] [2024-02-02 09:18:05,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:18:05,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-02 09:18:05,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:18:05,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-02 09:18:05,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-02-02 09:18:05,478 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 72 [2024-02-02 09:18:05,479 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 376 places, 569 transitions, 15282 flow. Second operand has 10 states, 10 states have (on average 19.9) internal successors, (199), 10 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:18:05,479 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:18:05,479 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 72 [2024-02-02 09:18:05,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:18:07,332 INFO L124 PetriNetUnfolderBase]: 3144/6594 cut-off events. [2024-02-02 09:18:07,333 INFO L125 PetriNetUnfolderBase]: For 282932/283909 co-relation queries the response was YES. [2024-02-02 09:18:07,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60096 conditions, 6594 events. 3144/6594 cut-off events. For 282932/283909 co-relation queries the response was YES. Maximal size of possible extension queue 362. Compared 54041 event pairs, 858 based on Foata normal form. 57/6495 useless extension candidates. Maximal degree in co-relation 59974. Up to 5332 conditions per place. [2024-02-02 09:18:07,418 INFO L140 encePairwiseOnDemand]: 64/72 looper letters, 490 selfloop transitions, 39 changer transitions 30/601 dead transitions. [2024-02-02 09:18:07,418 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 383 places, 601 transitions, 16777 flow [2024-02-02 09:18:07,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-02 09:18:07,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-02 09:18:07,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 219 transitions. [2024-02-02 09:18:07,419 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3802083333333333 [2024-02-02 09:18:07,419 INFO L175 Difference]: Start difference. First operand has 376 places, 569 transitions, 15282 flow. Second operand 8 states and 219 transitions. [2024-02-02 09:18:07,420 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 383 places, 601 transitions, 16777 flow [2024-02-02 09:18:08,176 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 370 places, 601 transitions, 16290 flow, removed 2 selfloop flow, removed 13 redundant places. [2024-02-02 09:18:08,185 INFO L231 Difference]: Finished difference. Result has 372 places, 542 transitions, 14345 flow [2024-02-02 09:18:08,185 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=14805, PETRI_DIFFERENCE_MINUEND_PLACES=363, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=569, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=530, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=14345, PETRI_PLACES=372, PETRI_TRANSITIONS=542} [2024-02-02 09:18:08,185 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 296 predicate places. [2024-02-02 09:18:08,185 INFO L495 AbstractCegarLoop]: Abstraction has has 372 places, 542 transitions, 14345 flow [2024-02-02 09:18:08,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 19.9) internal successors, (199), 10 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:18:08,186 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:18:08,186 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:18:08,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-02-02 09:18:08,186 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 58 more)] === [2024-02-02 09:18:08,186 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:18:08,187 INFO L85 PathProgramCache]: Analyzing trace with hash 1116449486, now seen corresponding path program 4 times [2024-02-02 09:18:08,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:18:08,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499029558] [2024-02-02 09:18:08,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:18:08,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:18:08,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:18:08,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:18:08,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:18:08,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499029558] [2024-02-02 09:18:08,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499029558] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:18:08,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:18:08,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-02 09:18:08,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892557919] [2024-02-02 09:18:08,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:18:08,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-02 09:18:08,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:18:08,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-02 09:18:08,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-02-02 09:18:08,495 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 72 [2024-02-02 09:18:08,495 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 372 places, 542 transitions, 14345 flow. Second operand has 10 states, 10 states have (on average 19.9) internal successors, (199), 10 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:18:08,495 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:18:08,495 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 72 [2024-02-02 09:18:08,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:18:10,294 INFO L124 PetriNetUnfolderBase]: 3097/6523 cut-off events. [2024-02-02 09:18:10,294 INFO L125 PetriNetUnfolderBase]: For 267287/268248 co-relation queries the response was YES. [2024-02-02 09:18:10,353 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58241 conditions, 6523 events. 3097/6523 cut-off events. For 267287/268248 co-relation queries the response was YES. Maximal size of possible extension queue 352. Compared 53542 event pairs, 860 based on Foata normal form. 56/6423 useless extension candidates. Maximal degree in co-relation 58121. Up to 5178 conditions per place. [2024-02-02 09:18:10,377 INFO L140 encePairwiseOnDemand]: 65/72 looper letters, 475 selfloop transitions, 38 changer transitions 15/570 dead transitions. [2024-02-02 09:18:10,378 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 378 places, 570 transitions, 15735 flow [2024-02-02 09:18:10,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-02 09:18:10,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-02 09:18:10,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 196 transitions. [2024-02-02 09:18:10,378 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3888888888888889 [2024-02-02 09:18:10,379 INFO L175 Difference]: Start difference. First operand has 372 places, 542 transitions, 14345 flow. Second operand 7 states and 196 transitions. [2024-02-02 09:18:10,379 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 378 places, 570 transitions, 15735 flow [2024-02-02 09:18:11,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 367 places, 570 transitions, 15627 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-02-02 09:18:11,231 INFO L231 Difference]: Finished difference. Result has 368 places, 528 transitions, 14042 flow [2024-02-02 09:18:11,231 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=14237, PETRI_DIFFERENCE_MINUEND_PLACES=361, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=542, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=504, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=14042, PETRI_PLACES=368, PETRI_TRANSITIONS=528} [2024-02-02 09:18:11,231 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 292 predicate places. [2024-02-02 09:18:11,231 INFO L495 AbstractCegarLoop]: Abstraction has has 368 places, 528 transitions, 14042 flow [2024-02-02 09:18:11,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 19.9) internal successors, (199), 10 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:18:11,232 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:18:11,232 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:18:11,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-02-02 09:18:11,232 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 58 more)] === [2024-02-02 09:18:11,232 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:18:11,232 INFO L85 PathProgramCache]: Analyzing trace with hash -1430441804, now seen corresponding path program 5 times [2024-02-02 09:18:11,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:18:11,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973730592] [2024-02-02 09:18:11,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:18:11,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:18:11,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:18:11,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:18:11,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:18:11,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973730592] [2024-02-02 09:18:11,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973730592] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:18:11,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:18:11,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-02 09:18:11,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209281243] [2024-02-02 09:18:11,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:18:11,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-02 09:18:11,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:18:11,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-02 09:18:11,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-02-02 09:18:11,467 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 72 [2024-02-02 09:18:11,467 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 368 places, 528 transitions, 14042 flow. Second operand has 10 states, 10 states have (on average 19.9) internal successors, (199), 10 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:18:11,467 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:18:11,467 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 72 [2024-02-02 09:18:11,467 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:18:13,142 INFO L124 PetriNetUnfolderBase]: 3092/6501 cut-off events. [2024-02-02 09:18:13,142 INFO L125 PetriNetUnfolderBase]: For 266975/267947 co-relation queries the response was YES. [2024-02-02 09:18:13,205 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58124 conditions, 6501 events. 3092/6501 cut-off events. For 266975/267947 co-relation queries the response was YES. Maximal size of possible extension queue 350. Compared 53191 event pairs, 862 based on Foata normal form. 58/6397 useless extension candidates. Maximal degree in co-relation 58004. Up to 5024 conditions per place. [2024-02-02 09:18:13,230 INFO L140 encePairwiseOnDemand]: 65/72 looper letters, 455 selfloop transitions, 34 changer transitions 18/549 dead transitions. [2024-02-02 09:18:13,231 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 372 places, 549 transitions, 15187 flow [2024-02-02 09:18:13,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-02 09:18:13,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-02 09:18:13,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 193 transitions. [2024-02-02 09:18:13,232 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38293650793650796 [2024-02-02 09:18:13,232 INFO L175 Difference]: Start difference. First operand has 368 places, 528 transitions, 14042 flow. Second operand 7 states and 193 transitions. [2024-02-02 09:18:13,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 372 places, 549 transitions, 15187 flow [2024-02-02 09:18:13,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 357 places, 549 transitions, 14871 flow, removed 0 selfloop flow, removed 15 redundant places. [2024-02-02 09:18:13,975 INFO L231 Difference]: Finished difference. Result has 357 places, 509 transitions, 13440 flow [2024-02-02 09:18:13,976 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=13686, PETRI_DIFFERENCE_MINUEND_PLACES=351, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=526, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=492, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=13440, PETRI_PLACES=357, PETRI_TRANSITIONS=509} [2024-02-02 09:18:13,976 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 281 predicate places. [2024-02-02 09:18:13,976 INFO L495 AbstractCegarLoop]: Abstraction has has 357 places, 509 transitions, 13440 flow [2024-02-02 09:18:13,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 19.9) internal successors, (199), 10 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:18:13,976 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:18:13,976 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:18:13,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-02-02 09:18:13,977 INFO L420 AbstractCegarLoop]: === Iteration 114 === Targeting P0Err9ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 58 more)] === [2024-02-02 09:18:13,977 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:18:13,977 INFO L85 PathProgramCache]: Analyzing trace with hash -986117444, now seen corresponding path program 5 times [2024-02-02 09:18:13,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:18:13,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018263063] [2024-02-02 09:18:13,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:18:13,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:18:13,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:18:14,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:18:14,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:18:14,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018263063] [2024-02-02 09:18:14,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018263063] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:18:14,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:18:14,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-02 09:18:14,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145005552] [2024-02-02 09:18:14,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:18:14,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-02 09:18:14,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:18:14,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-02 09:18:14,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-02-02 09:18:14,237 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 72 [2024-02-02 09:18:14,237 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 357 places, 509 transitions, 13440 flow. Second operand has 9 states, 9 states have (on average 18.22222222222222) internal successors, (164), 9 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:18:14,237 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:18:14,237 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 72 [2024-02-02 09:18:14,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:18:16,117 INFO L124 PetriNetUnfolderBase]: 3276/6591 cut-off events. [2024-02-02 09:18:16,117 INFO L125 PetriNetUnfolderBase]: For 256026/257039 co-relation queries the response was YES. [2024-02-02 09:18:16,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58780 conditions, 6591 events. 3276/6591 cut-off events. For 256026/257039 co-relation queries the response was YES. Maximal size of possible extension queue 341. Compared 51751 event pairs, 843 based on Foata normal form. 65/6516 useless extension candidates. Maximal degree in co-relation 58667. Up to 2685 conditions per place. [2024-02-02 09:18:16,200 INFO L140 encePairwiseOnDemand]: 59/72 looper letters, 475 selfloop transitions, 92 changer transitions 14/610 dead transitions. [2024-02-02 09:18:16,200 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 610 transitions, 15934 flow [2024-02-02 09:18:16,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-02-02 09:18:16,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-02-02 09:18:16,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 253 transitions. [2024-02-02 09:18:16,216 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3904320987654321 [2024-02-02 09:18:16,216 INFO L175 Difference]: Start difference. First operand has 357 places, 509 transitions, 13440 flow. Second operand 9 states and 253 transitions. [2024-02-02 09:18:16,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 365 places, 610 transitions, 15934 flow [2024-02-02 09:18:16,908 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 348 places, 610 transitions, 15661 flow, removed 0 selfloop flow, removed 17 redundant places. [2024-02-02 09:18:16,917 INFO L231 Difference]: Finished difference. Result has 349 places, 499 transitions, 13117 flow [2024-02-02 09:18:16,918 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=13167, PETRI_DIFFERENCE_MINUEND_PLACES=340, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=509, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=417, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=13117, PETRI_PLACES=349, PETRI_TRANSITIONS=499} [2024-02-02 09:18:16,918 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 273 predicate places. [2024-02-02 09:18:16,918 INFO L495 AbstractCegarLoop]: Abstraction has has 349 places, 499 transitions, 13117 flow [2024-02-02 09:18:16,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 18.22222222222222) internal successors, (164), 9 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:18:16,918 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:18:16,918 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:18:16,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-02-02 09:18:16,919 INFO L420 AbstractCegarLoop]: === Iteration 115 === Targeting P0Err9ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 58 more)] === [2024-02-02 09:18:16,919 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:18:16,919 INFO L85 PathProgramCache]: Analyzing trace with hash -1472494270, now seen corresponding path program 6 times [2024-02-02 09:18:16,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:18:16,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043470025] [2024-02-02 09:18:16,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:18:16,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:18:16,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:18:17,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:18:17,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:18:17,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043470025] [2024-02-02 09:18:17,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043470025] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:18:17,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:18:17,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-02 09:18:17,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341193266] [2024-02-02 09:18:17,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:18:17,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-02 09:18:17,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:18:17,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-02 09:18:17,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-02-02 09:18:17,185 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 72 [2024-02-02 09:18:17,185 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 349 places, 499 transitions, 13117 flow. Second operand has 9 states, 9 states have (on average 18.22222222222222) internal successors, (164), 9 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:18:17,185 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:18:17,185 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 72 [2024-02-02 09:18:17,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:18:18,881 INFO L124 PetriNetUnfolderBase]: 3200/6471 cut-off events. [2024-02-02 09:18:18,881 INFO L125 PetriNetUnfolderBase]: For 253034/254046 co-relation queries the response was YES. [2024-02-02 09:18:18,951 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57015 conditions, 6471 events. 3200/6471 cut-off events. For 253034/254046 co-relation queries the response was YES. Maximal size of possible extension queue 332. Compared 50761 event pairs, 858 based on Foata normal form. 64/6403 useless extension candidates. Maximal degree in co-relation 56905. Up to 2685 conditions per place. [2024-02-02 09:18:18,980 INFO L140 encePairwiseOnDemand]: 59/72 looper letters, 469 selfloop transitions, 84 changer transitions 18/600 dead transitions. [2024-02-02 09:18:18,980 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 600 transitions, 15602 flow [2024-02-02 09:18:18,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-02-02 09:18:18,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-02-02 09:18:18,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 262 transitions. [2024-02-02 09:18:18,981 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.404320987654321 [2024-02-02 09:18:18,981 INFO L175 Difference]: Start difference. First operand has 349 places, 499 transitions, 13117 flow. Second operand 9 states and 262 transitions. [2024-02-02 09:18:18,982 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 600 transitions, 15602 flow [2024-02-02 09:18:19,684 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 345 places, 600 transitions, 15218 flow, removed 0 selfloop flow, removed 12 redundant places. [2024-02-02 09:18:19,693 INFO L231 Difference]: Finished difference. Result has 346 places, 488 transitions, 12594 flow [2024-02-02 09:18:19,693 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=12736, PETRI_DIFFERENCE_MINUEND_PLACES=337, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=499, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=416, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=12594, PETRI_PLACES=346, PETRI_TRANSITIONS=488} [2024-02-02 09:18:19,693 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 270 predicate places. [2024-02-02 09:18:19,694 INFO L495 AbstractCegarLoop]: Abstraction has has 346 places, 488 transitions, 12594 flow [2024-02-02 09:18:19,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 18.22222222222222) internal successors, (164), 9 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:18:19,694 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:18:19,694 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:18:19,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-02-02 09:18:19,694 INFO L420 AbstractCegarLoop]: === Iteration 116 === Targeting P0Err9ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 58 more)] === [2024-02-02 09:18:19,694 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:18:19,695 INFO L85 PathProgramCache]: Analyzing trace with hash -1112787608, now seen corresponding path program 7 times [2024-02-02 09:18:19,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:18:19,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202541764] [2024-02-02 09:18:19,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:18:19,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:18:19,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:18:19,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:18:19,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:18:19,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202541764] [2024-02-02 09:18:19,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202541764] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:18:19,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:18:19,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-02 09:18:19,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078036062] [2024-02-02 09:18:19,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:18:19,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-02 09:18:19,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:18:19,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-02 09:18:19,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-02-02 09:18:19,946 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 72 [2024-02-02 09:18:19,946 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 488 transitions, 12594 flow. Second operand has 9 states, 9 states have (on average 18.22222222222222) internal successors, (164), 9 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:18:19,946 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:18:19,946 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 72 [2024-02-02 09:18:19,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:18:21,562 INFO L124 PetriNetUnfolderBase]: 3095/6268 cut-off events. [2024-02-02 09:18:21,562 INFO L125 PetriNetUnfolderBase]: For 230561/231542 co-relation queries the response was YES. [2024-02-02 09:18:21,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54745 conditions, 6268 events. 3095/6268 cut-off events. For 230561/231542 co-relation queries the response was YES. Maximal size of possible extension queue 325. Compared 48889 event pairs, 834 based on Foata normal form. 46/6185 useless extension candidates. Maximal degree in co-relation 54634. Up to 2722 conditions per place. [2024-02-02 09:18:21,647 INFO L140 encePairwiseOnDemand]: 62/72 looper letters, 444 selfloop transitions, 65 changer transitions 28/566 dead transitions. [2024-02-02 09:18:21,647 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 566 transitions, 14735 flow [2024-02-02 09:18:21,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-02 09:18:21,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-02 09:18:21,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 225 transitions. [2024-02-02 09:18:21,648 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.390625 [2024-02-02 09:18:21,648 INFO L175 Difference]: Start difference. First operand has 346 places, 488 transitions, 12594 flow. Second operand 8 states and 225 transitions. [2024-02-02 09:18:21,648 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 566 transitions, 14735 flow [2024-02-02 09:18:22,325 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 346 places, 566 transitions, 14587 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-02-02 09:18:22,333 INFO L231 Difference]: Finished difference. Result has 347 places, 464 transitions, 12011 flow [2024-02-02 09:18:22,334 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=12446, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=488, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=423, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=12011, PETRI_PLACES=347, PETRI_TRANSITIONS=464} [2024-02-02 09:18:22,334 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 271 predicate places. [2024-02-02 09:18:22,334 INFO L495 AbstractCegarLoop]: Abstraction has has 347 places, 464 transitions, 12011 flow [2024-02-02 09:18:22,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 18.22222222222222) internal successors, (164), 9 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:18:22,335 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:18:22,335 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:18:22,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-02-02 09:18:22,335 INFO L420 AbstractCegarLoop]: === Iteration 117 === Targeting P0Err9ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 58 more)] === [2024-02-02 09:18:22,335 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:18:22,335 INFO L85 PathProgramCache]: Analyzing trace with hash 348650612, now seen corresponding path program 8 times [2024-02-02 09:18:22,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:18:22,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775007733] [2024-02-02 09:18:22,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:18:22,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:18:22,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:18:22,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:18:22,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:18:22,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775007733] [2024-02-02 09:18:22,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775007733] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:18:22,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:18:22,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-02 09:18:22,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989218373] [2024-02-02 09:18:22,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:18:22,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-02 09:18:22,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:18:22,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-02 09:18:22,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-02-02 09:18:22,623 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 72 [2024-02-02 09:18:22,623 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 347 places, 464 transitions, 12011 flow. Second operand has 9 states, 9 states have (on average 18.22222222222222) internal successors, (164), 9 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:18:22,623 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:18:22,623 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 72 [2024-02-02 09:18:22,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:18:24,167 INFO L124 PetriNetUnfolderBase]: 3030/6076 cut-off events. [2024-02-02 09:18:24,168 INFO L125 PetriNetUnfolderBase]: For 222145/223165 co-relation queries the response was YES. [2024-02-02 09:18:24,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52619 conditions, 6076 events. 3030/6076 cut-off events. For 222145/223165 co-relation queries the response was YES. Maximal size of possible extension queue 303. Compared 46492 event pairs, 675 based on Foata normal form. 118/6093 useless extension candidates. Maximal degree in co-relation 52507. Up to 2667 conditions per place. [2024-02-02 09:18:24,245 INFO L140 encePairwiseOnDemand]: 54/72 looper letters, 326 selfloop transitions, 151 changer transitions 9/513 dead transitions. [2024-02-02 09:18:24,245 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 513 transitions, 13535 flow [2024-02-02 09:18:24,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-02 09:18:24,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-02 09:18:24,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 231 transitions. [2024-02-02 09:18:24,246 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4010416666666667 [2024-02-02 09:18:24,247 INFO L175 Difference]: Start difference. First operand has 347 places, 464 transitions, 12011 flow. Second operand 8 states and 231 transitions. [2024-02-02 09:18:24,247 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 513 transitions, 13535 flow [2024-02-02 09:18:24,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 340 places, 513 transitions, 13219 flow, removed 8 selfloop flow, removed 14 redundant places. [2024-02-02 09:18:24,904 INFO L231 Difference]: Finished difference. Result has 342 places, 458 transitions, 11965 flow [2024-02-02 09:18:24,911 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=11695, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=464, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=150, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=313, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=11965, PETRI_PLACES=342, PETRI_TRANSITIONS=458} [2024-02-02 09:18:24,912 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 266 predicate places. [2024-02-02 09:18:24,912 INFO L495 AbstractCegarLoop]: Abstraction has has 342 places, 458 transitions, 11965 flow [2024-02-02 09:18:24,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 18.22222222222222) internal successors, (164), 9 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:18:24,912 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:18:24,912 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:18:24,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-02-02 09:18:24,913 INFO L420 AbstractCegarLoop]: === Iteration 118 === Targeting P0Err9ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 58 more)] === [2024-02-02 09:18:24,913 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:18:24,913 INFO L85 PathProgramCache]: Analyzing trace with hash 349571312, now seen corresponding path program 9 times [2024-02-02 09:18:24,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:18:24,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063167717] [2024-02-02 09:18:24,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:18:24,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:18:24,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:18:25,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:18:25,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:18:25,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063167717] [2024-02-02 09:18:25,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063167717] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:18:25,160 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:18:25,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-02 09:18:25,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512089343] [2024-02-02 09:18:25,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:18:25,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-02 09:18:25,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:18:25,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-02 09:18:25,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-02-02 09:18:25,213 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 72 [2024-02-02 09:18:25,213 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 458 transitions, 11965 flow. Second operand has 9 states, 9 states have (on average 18.22222222222222) internal successors, (164), 9 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:18:25,213 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:18:25,213 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 72 [2024-02-02 09:18:25,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:18:26,748 INFO L124 PetriNetUnfolderBase]: 2999/6031 cut-off events. [2024-02-02 09:18:26,748 INFO L125 PetriNetUnfolderBase]: For 217225/218235 co-relation queries the response was YES. [2024-02-02 09:18:26,814 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52903 conditions, 6031 events. 2999/6031 cut-off events. For 217225/218235 co-relation queries the response was YES. Maximal size of possible extension queue 301. Compared 46094 event pairs, 678 based on Foata normal form. 106/6036 useless extension candidates. Maximal degree in co-relation 52790. Up to 2667 conditions per place. [2024-02-02 09:18:26,841 INFO L140 encePairwiseOnDemand]: 54/72 looper letters, 333 selfloop transitions, 129 changer transitions 21/508 dead transitions. [2024-02-02 09:18:26,842 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 508 transitions, 13525 flow [2024-02-02 09:18:26,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-02 09:18:26,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-02 09:18:26,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 240 transitions. [2024-02-02 09:18:26,843 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-02-02 09:18:26,843 INFO L175 Difference]: Start difference. First operand has 342 places, 458 transitions, 11965 flow. Second operand 8 states and 240 transitions. [2024-02-02 09:18:26,843 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 508 transitions, 13525 flow [2024-02-02 09:18:27,486 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 508 transitions, 13190 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-02-02 09:18:27,508 INFO L231 Difference]: Finished difference. Result has 342 places, 438 transitions, 11480 flow [2024-02-02 09:18:27,524 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=11640, PETRI_DIFFERENCE_MINUEND_PLACES=334, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=458, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=128, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=330, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=11480, PETRI_PLACES=342, PETRI_TRANSITIONS=438} [2024-02-02 09:18:27,525 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 266 predicate places. [2024-02-02 09:18:27,525 INFO L495 AbstractCegarLoop]: Abstraction has has 342 places, 438 transitions, 11480 flow [2024-02-02 09:18:27,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 18.22222222222222) internal successors, (164), 9 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:18:27,525 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:18:27,525 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:18:27,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-02-02 09:18:27,525 INFO L420 AbstractCegarLoop]: === Iteration 119 === Targeting P0Err9ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 58 more)] === [2024-02-02 09:18:27,526 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:18:27,526 INFO L85 PathProgramCache]: Analyzing trace with hash -492617624, now seen corresponding path program 10 times [2024-02-02 09:18:27,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:18:27,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373375640] [2024-02-02 09:18:27,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:18:27,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:18:27,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:18:27,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:18:27,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:18:27,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373375640] [2024-02-02 09:18:27,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373375640] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:18:27,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:18:27,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-02 09:18:27,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583699391] [2024-02-02 09:18:27,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:18:27,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-02 09:18:27,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:18:27,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-02 09:18:27,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-02-02 09:18:27,853 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 72 [2024-02-02 09:18:27,853 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 438 transitions, 11480 flow. Second operand has 9 states, 9 states have (on average 18.22222222222222) internal successors, (164), 9 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:18:27,853 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:18:27,853 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 72 [2024-02-02 09:18:27,854 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:18:29,500 INFO L124 PetriNetUnfolderBase]: 2942/6030 cut-off events. [2024-02-02 09:18:29,500 INFO L125 PetriNetUnfolderBase]: For 211587/212481 co-relation queries the response was YES. [2024-02-02 09:18:29,587 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52471 conditions, 6030 events. 2942/6030 cut-off events. For 211587/212481 co-relation queries the response was YES. Maximal size of possible extension queue 293. Compared 46706 event pairs, 740 based on Foata normal form. 62/5991 useless extension candidates. Maximal degree in co-relation 52359. Up to 2760 conditions per place. [2024-02-02 09:18:29,619 INFO L140 encePairwiseOnDemand]: 55/72 looper letters, 319 selfloop transitions, 125 changer transitions 25/494 dead transitions. [2024-02-02 09:18:29,619 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 494 transitions, 13128 flow [2024-02-02 09:18:29,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-02 09:18:29,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-02 09:18:29,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 234 transitions. [2024-02-02 09:18:29,621 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-02-02 09:18:29,621 INFO L175 Difference]: Start difference. First operand has 342 places, 438 transitions, 11480 flow. Second operand 8 states and 234 transitions. [2024-02-02 09:18:29,621 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 494 transitions, 13128 flow [2024-02-02 09:18:30,210 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 494 transitions, 12742 flow, removed 13 selfloop flow, removed 11 redundant places. [2024-02-02 09:18:30,217 INFO L231 Difference]: Finished difference. Result has 339 places, 421 transitions, 10914 flow [2024-02-02 09:18:30,217 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=11106, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=438, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=317, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=10914, PETRI_PLACES=339, PETRI_TRANSITIONS=421} [2024-02-02 09:18:30,218 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 263 predicate places. [2024-02-02 09:18:30,218 INFO L495 AbstractCegarLoop]: Abstraction has has 339 places, 421 transitions, 10914 flow [2024-02-02 09:18:30,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 18.22222222222222) internal successors, (164), 9 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:18:30,218 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:18:30,218 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:18:30,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-02-02 09:18:30,218 INFO L420 AbstractCegarLoop]: === Iteration 120 === Targeting P0Err9ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 58 more)] === [2024-02-02 09:18:30,219 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:18:30,219 INFO L85 PathProgramCache]: Analyzing trace with hash -937042828, now seen corresponding path program 11 times [2024-02-02 09:18:30,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:18:30,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100965934] [2024-02-02 09:18:30,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:18:30,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:18:30,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:18:30,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:18:30,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:18:30,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100965934] [2024-02-02 09:18:30,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100965934] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:18:30,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:18:30,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-02 09:18:30,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403641528] [2024-02-02 09:18:30,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:18:30,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-02 09:18:30,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:18:30,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-02 09:18:30,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-02-02 09:18:30,557 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 72 [2024-02-02 09:18:30,558 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 339 places, 421 transitions, 10914 flow. Second operand has 9 states, 9 states have (on average 18.22222222222222) internal successors, (164), 9 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:18:30,558 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:18:30,558 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 72 [2024-02-02 09:18:30,558 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:18:31,946 INFO L124 PetriNetUnfolderBase]: 2963/6125 cut-off events. [2024-02-02 09:18:31,946 INFO L125 PetriNetUnfolderBase]: For 206036/206912 co-relation queries the response was YES. [2024-02-02 09:18:32,000 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52117 conditions, 6125 events. 2963/6125 cut-off events. For 206036/206912 co-relation queries the response was YES. Maximal size of possible extension queue 286. Compared 47807 event pairs, 679 based on Foata normal form. 50/6074 useless extension candidates. Maximal degree in co-relation 52007. Up to 3073 conditions per place. [2024-02-02 09:18:32,023 INFO L140 encePairwiseOnDemand]: 54/72 looper letters, 326 selfloop transitions, 124 changer transitions 10/485 dead transitions. [2024-02-02 09:18:32,023 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 485 transitions, 12621 flow [2024-02-02 09:18:32,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-02 09:18:32,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-02 09:18:32,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 240 transitions. [2024-02-02 09:18:32,024 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-02-02 09:18:32,024 INFO L175 Difference]: Start difference. First operand has 339 places, 421 transitions, 10914 flow. Second operand 8 states and 240 transitions. [2024-02-02 09:18:32,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 346 places, 485 transitions, 12621 flow [2024-02-02 09:18:32,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 339 places, 485 transitions, 12432 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-02-02 09:18:32,579 INFO L231 Difference]: Finished difference. Result has 341 places, 413 transitions, 10862 flow [2024-02-02 09:18:32,580 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=10725, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=421, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=297, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=10862, PETRI_PLACES=341, PETRI_TRANSITIONS=413} [2024-02-02 09:18:32,580 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 265 predicate places. [2024-02-02 09:18:32,580 INFO L495 AbstractCegarLoop]: Abstraction has has 341 places, 413 transitions, 10862 flow [2024-02-02 09:18:32,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 18.22222222222222) internal successors, (164), 9 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:18:32,580 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:18:32,581 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:18:32,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-02-02 09:18:32,581 INFO L420 AbstractCegarLoop]: === Iteration 121 === Targeting P0Err9ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 58 more)] === [2024-02-02 09:18:32,581 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:18:32,581 INFO L85 PathProgramCache]: Analyzing trace with hash 1076988306, now seen corresponding path program 12 times [2024-02-02 09:18:32,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:18:32,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582615960] [2024-02-02 09:18:32,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:18:32,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:18:32,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:18:32,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:18:32,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:18:32,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582615960] [2024-02-02 09:18:32,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582615960] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:18:32,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:18:32,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-02 09:18:32,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323864052] [2024-02-02 09:18:32,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:18:32,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-02 09:18:32,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:18:32,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-02 09:18:32,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-02-02 09:18:32,842 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 72 [2024-02-02 09:18:32,842 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 413 transitions, 10862 flow. Second operand has 9 states, 9 states have (on average 18.22222222222222) internal successors, (164), 9 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:18:32,842 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:18:32,842 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 72 [2024-02-02 09:18:32,842 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:18:34,274 INFO L124 PetriNetUnfolderBase]: 2917/6051 cut-off events. [2024-02-02 09:18:34,274 INFO L125 PetriNetUnfolderBase]: For 203884/204726 co-relation queries the response was YES. [2024-02-02 09:18:34,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51823 conditions, 6051 events. 2917/6051 cut-off events. For 203884/204726 co-relation queries the response was YES. Maximal size of possible extension queue 284. Compared 47195 event pairs, 691 based on Foata normal form. 50/6000 useless extension candidates. Maximal degree in co-relation 51712. Up to 3073 conditions per place. [2024-02-02 09:18:34,343 INFO L140 encePairwiseOnDemand]: 54/72 looper letters, 292 selfloop transitions, 126 changer transitions 26/469 dead transitions. [2024-02-02 09:18:34,343 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 348 places, 469 transitions, 12413 flow [2024-02-02 09:18:34,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-02 09:18:34,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-02 09:18:34,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 241 transitions. [2024-02-02 09:18:34,344 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4184027777777778 [2024-02-02 09:18:34,345 INFO L175 Difference]: Start difference. First operand has 341 places, 413 transitions, 10862 flow. Second operand 8 states and 241 transitions. [2024-02-02 09:18:34,357 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 348 places, 469 transitions, 12413 flow [2024-02-02 09:18:34,882 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 340 places, 469 transitions, 12116 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-02-02 09:18:34,889 INFO L231 Difference]: Finished difference. Result has 341 places, 387 transitions, 10300 flow [2024-02-02 09:18:34,889 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=10569, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=413, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=126, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=10300, PETRI_PLACES=341, PETRI_TRANSITIONS=387} [2024-02-02 09:18:34,889 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 265 predicate places. [2024-02-02 09:18:34,889 INFO L495 AbstractCegarLoop]: Abstraction has has 341 places, 387 transitions, 10300 flow [2024-02-02 09:18:34,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 18.22222222222222) internal successors, (164), 9 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:18:34,890 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:18:34,890 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:18:34,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-02-02 09:18:34,890 INFO L420 AbstractCegarLoop]: === Iteration 122 === Targeting P0Err9ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 58 more)] === [2024-02-02 09:18:34,890 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:18:34,890 INFO L85 PathProgramCache]: Analyzing trace with hash 1208179828, now seen corresponding path program 13 times [2024-02-02 09:18:34,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:18:34,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477413245] [2024-02-02 09:18:34,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:18:34,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:18:34,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:18:35,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:18:35,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:18:35,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477413245] [2024-02-02 09:18:35,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477413245] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:18:35,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:18:35,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-02 09:18:35,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851735592] [2024-02-02 09:18:35,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:18:35,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-02 09:18:35,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:18:35,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-02 09:18:35,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-02-02 09:18:35,188 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 72 [2024-02-02 09:18:35,188 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 387 transitions, 10300 flow. Second operand has 9 states, 9 states have (on average 18.22222222222222) internal successors, (164), 9 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:18:35,188 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:18:35,188 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 72 [2024-02-02 09:18:35,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:18:36,580 INFO L124 PetriNetUnfolderBase]: 2805/5825 cut-off events. [2024-02-02 09:18:36,580 INFO L125 PetriNetUnfolderBase]: For 195076/195868 co-relation queries the response was YES. [2024-02-02 09:18:36,634 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49733 conditions, 5825 events. 2805/5825 cut-off events. For 195076/195868 co-relation queries the response was YES. Maximal size of possible extension queue 269. Compared 45014 event pairs, 618 based on Foata normal form. 52/5780 useless extension candidates. Maximal degree in co-relation 49622. Up to 2375 conditions per place. [2024-02-02 09:18:36,661 INFO L140 encePairwiseOnDemand]: 54/72 looper letters, 276 selfloop transitions, 119 changer transitions 25/443 dead transitions. [2024-02-02 09:18:36,661 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 348 places, 443 transitions, 11717 flow [2024-02-02 09:18:36,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-02 09:18:36,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-02 09:18:36,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 231 transitions. [2024-02-02 09:18:36,662 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4010416666666667 [2024-02-02 09:18:36,663 INFO L175 Difference]: Start difference. First operand has 341 places, 387 transitions, 10300 flow. Second operand 8 states and 231 transitions. [2024-02-02 09:18:36,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 348 places, 443 transitions, 11717 flow [2024-02-02 09:18:37,211 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 443 transitions, 11350 flow, removed 6 selfloop flow, removed 13 redundant places. [2024-02-02 09:18:37,231 INFO L231 Difference]: Finished difference. Result has 336 places, 363 transitions, 9688 flow [2024-02-02 09:18:37,248 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=9937, PETRI_DIFFERENCE_MINUEND_PLACES=328, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=387, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=268, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9688, PETRI_PLACES=336, PETRI_TRANSITIONS=363} [2024-02-02 09:18:37,249 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 260 predicate places. [2024-02-02 09:18:37,249 INFO L495 AbstractCegarLoop]: Abstraction has has 336 places, 363 transitions, 9688 flow [2024-02-02 09:18:37,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 18.22222222222222) internal successors, (164), 9 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:18:37,249 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:18:37,249 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:18:37,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-02-02 09:18:37,249 INFO L420 AbstractCegarLoop]: === Iteration 123 === Targeting P0Err9ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 58 more)] === [2024-02-02 09:18:37,250 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:18:37,250 INFO L85 PathProgramCache]: Analyzing trace with hash 1942099000, now seen corresponding path program 14 times [2024-02-02 09:18:37,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:18:37,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74254613] [2024-02-02 09:18:37,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:18:37,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:18:37,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:18:37,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:18:37,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:18:37,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74254613] [2024-02-02 09:18:37,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74254613] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:18:37,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:18:37,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-02 09:18:37,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999726453] [2024-02-02 09:18:37,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:18:37,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-02 09:18:37,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:18:37,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-02 09:18:37,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-02-02 09:18:37,634 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 72 [2024-02-02 09:18:37,634 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 363 transitions, 9688 flow. Second operand has 9 states, 9 states have (on average 18.22222222222222) internal successors, (164), 9 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:18:37,634 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:18:37,634 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 72 [2024-02-02 09:18:37,634 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:18:38,836 INFO L124 PetriNetUnfolderBase]: 2624/5446 cut-off events. [2024-02-02 09:18:38,836 INFO L125 PetriNetUnfolderBase]: For 175882/176661 co-relation queries the response was YES. [2024-02-02 09:18:38,885 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45921 conditions, 5446 events. 2624/5446 cut-off events. For 175882/176661 co-relation queries the response was YES. Maximal size of possible extension queue 255. Compared 41464 event pairs, 474 based on Foata normal form. 44/5406 useless extension candidates. Maximal degree in co-relation 45813. Up to 2173 conditions per place. [2024-02-02 09:18:38,906 INFO L140 encePairwiseOnDemand]: 55/72 looper letters, 230 selfloop transitions, 119 changer transitions 27/398 dead transitions. [2024-02-02 09:18:38,906 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 398 transitions, 10772 flow [2024-02-02 09:18:38,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-02 09:18:38,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-02 09:18:38,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 225 transitions. [2024-02-02 09:18:38,907 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.390625 [2024-02-02 09:18:38,907 INFO L175 Difference]: Start difference. First operand has 336 places, 363 transitions, 9688 flow. Second operand 8 states and 225 transitions. [2024-02-02 09:18:38,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 398 transitions, 10772 flow [2024-02-02 09:18:39,414 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 398 transitions, 9930 flow, removed 4 selfloop flow, removed 30 redundant places. [2024-02-02 09:18:39,420 INFO L231 Difference]: Finished difference. Result has 311 places, 335 transitions, 8568 flow [2024-02-02 09:18:39,420 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=8782, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=361, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8568, PETRI_PLACES=311, PETRI_TRANSITIONS=335} [2024-02-02 09:18:39,420 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 235 predicate places. [2024-02-02 09:18:39,420 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 335 transitions, 8568 flow [2024-02-02 09:18:39,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 18.22222222222222) internal successors, (164), 9 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:18:39,421 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:18:39,421 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:18:39,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-02-02 09:18:39,421 INFO L420 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 58 more)] === [2024-02-02 09:18:39,421 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:18:39,421 INFO L85 PathProgramCache]: Analyzing trace with hash -1964480034, now seen corresponding path program 1 times [2024-02-02 09:18:39,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:18:39,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705461171] [2024-02-02 09:18:39,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:18:39,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:18:39,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-02 09:18:39,431 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-02-02 09:18:39,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-02 09:18:39,482 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-02-02 09:18:39,482 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-02-02 09:18:39,483 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT (60 of 61 remaining) [2024-02-02 09:18:39,485 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT (59 of 61 remaining) [2024-02-02 09:18:39,485 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT (58 of 61 remaining) [2024-02-02 09:18:39,485 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (57 of 61 remaining) [2024-02-02 09:18:39,485 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err3ASSERT_VIOLATIONWITNESS_INVARIANT (56 of 61 remaining) [2024-02-02 09:18:39,485 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT (55 of 61 remaining) [2024-02-02 09:18:39,486 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err5ASSERT_VIOLATIONWITNESS_INVARIANT (54 of 61 remaining) [2024-02-02 09:18:39,486 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err6ASSERT_VIOLATIONWITNESS_INVARIANT (53 of 61 remaining) [2024-02-02 09:18:39,486 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT (52 of 61 remaining) [2024-02-02 09:18:39,486 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err8ASSERT_VIOLATIONWITNESS_INVARIANT (51 of 61 remaining) [2024-02-02 09:18:39,486 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err9ASSERT_VIOLATIONWITNESS_INVARIANT (50 of 61 remaining) [2024-02-02 09:18:39,486 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err10ASSERT_VIOLATIONWITNESS_INVARIANT (49 of 61 remaining) [2024-02-02 09:18:39,486 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err11ASSERT_VIOLATIONWITNESS_INVARIANT (48 of 61 remaining) [2024-02-02 09:18:39,487 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err12ASSERT_VIOLATIONWITNESS_INVARIANT (47 of 61 remaining) [2024-02-02 09:18:39,487 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err13ASSERT_VIOLATIONWITNESS_INVARIANT (46 of 61 remaining) [2024-02-02 09:18:39,487 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (45 of 61 remaining) [2024-02-02 09:18:39,487 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (44 of 61 remaining) [2024-02-02 09:18:39,487 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (43 of 61 remaining) [2024-02-02 09:18:39,487 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (42 of 61 remaining) [2024-02-02 09:18:39,487 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (41 of 61 remaining) [2024-02-02 09:18:39,487 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (40 of 61 remaining) [2024-02-02 09:18:39,488 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (39 of 61 remaining) [2024-02-02 09:18:39,488 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT (38 of 61 remaining) [2024-02-02 09:18:39,488 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err8ASSERT_VIOLATIONWITNESS_INVARIANT (37 of 61 remaining) [2024-02-02 09:18:39,488 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err9ASSERT_VIOLATIONWITNESS_INVARIANT (36 of 61 remaining) [2024-02-02 09:18:39,488 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err10ASSERT_VIOLATIONWITNESS_INVARIANT (35 of 61 remaining) [2024-02-02 09:18:39,488 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err11ASSERT_VIOLATIONWITNESS_INVARIANT (34 of 61 remaining) [2024-02-02 09:18:39,488 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (33 of 61 remaining) [2024-02-02 09:18:39,489 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (32 of 61 remaining) [2024-02-02 09:18:39,489 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (31 of 61 remaining) [2024-02-02 09:18:39,489 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT (30 of 61 remaining) [2024-02-02 09:18:39,489 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONWITNESS_INVARIANT (29 of 61 remaining) [2024-02-02 09:18:39,489 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION (28 of 61 remaining) [2024-02-02 09:18:39,489 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (27 of 61 remaining) [2024-02-02 09:18:39,489 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (26 of 61 remaining) [2024-02-02 09:18:39,489 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT (25 of 61 remaining) [2024-02-02 09:18:39,490 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT (24 of 61 remaining) [2024-02-02 09:18:39,490 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (23 of 61 remaining) [2024-02-02 09:18:39,490 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err3ASSERT_VIOLATIONWITNESS_INVARIANT (22 of 61 remaining) [2024-02-02 09:18:39,490 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT (21 of 61 remaining) [2024-02-02 09:18:39,490 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err5ASSERT_VIOLATIONWITNESS_INVARIANT (20 of 61 remaining) [2024-02-02 09:18:39,490 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err6ASSERT_VIOLATIONWITNESS_INVARIANT (19 of 61 remaining) [2024-02-02 09:18:39,490 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT (18 of 61 remaining) [2024-02-02 09:18:39,490 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err8ASSERT_VIOLATIONWITNESS_INVARIANT (17 of 61 remaining) [2024-02-02 09:18:39,491 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err9ASSERT_VIOLATIONWITNESS_INVARIANT (16 of 61 remaining) [2024-02-02 09:18:39,491 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err10ASSERT_VIOLATIONWITNESS_INVARIANT (15 of 61 remaining) [2024-02-02 09:18:39,491 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err11ASSERT_VIOLATIONWITNESS_INVARIANT (14 of 61 remaining) [2024-02-02 09:18:39,491 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err12ASSERT_VIOLATIONWITNESS_INVARIANT (13 of 61 remaining) [2024-02-02 09:18:39,491 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err13ASSERT_VIOLATIONWITNESS_INVARIANT (12 of 61 remaining) [2024-02-02 09:18:39,491 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (11 of 61 remaining) [2024-02-02 09:18:39,491 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (10 of 61 remaining) [2024-02-02 09:18:39,491 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (9 of 61 remaining) [2024-02-02 09:18:39,492 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (8 of 61 remaining) [2024-02-02 09:18:39,492 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 61 remaining) [2024-02-02 09:18:39,492 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 61 remaining) [2024-02-02 09:18:39,492 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 61 remaining) [2024-02-02 09:18:39,492 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 61 remaining) [2024-02-02 09:18:39,492 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err8ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 61 remaining) [2024-02-02 09:18:39,492 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err9ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 61 remaining) [2024-02-02 09:18:39,492 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err10ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 61 remaining) [2024-02-02 09:18:39,493 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err11ASSERT_VIOLATIONWITNESS_INVARIANT (0 of 61 remaining) [2024-02-02 09:18:39,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-02-02 09:18:39,493 INFO L445 BasicCegarLoop]: Path program histogram: [14, 13, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:18:39,498 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-02-02 09:18:39,498 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-02-02 09:18:39,546 INFO L503 ceAbstractionStarter]: Automizer considered 32 witness invariants [2024-02-02 09:18:39,561 INFO L504 ceAbstractionStarter]: WitnessConsidered=32 [2024-02-02 09:18:39,564 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.02 09:18:39 BasicIcfg [2024-02-02 09:18:39,564 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-02-02 09:18:39,564 INFO L158 Benchmark]: Toolchain (without parser) took 224591.43ms. Allocated memory was 222.3MB in the beginning and 3.4GB in the end (delta: 3.2GB). Free memory was 136.0MB in the beginning and 1.6GB in the end (delta: -1.5GB). Peak memory consumption was 1.7GB. Max. memory is 16.1GB. [2024-02-02 09:18:39,565 INFO L158 Benchmark]: Witness Parser took 0.16ms. Allocated memory is still 222.3MB. Free memory is still 185.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-02-02 09:18:39,565 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 222.3MB. Free memory is still 184.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-02-02 09:18:39,565 INFO L158 Benchmark]: CACSL2BoogieTranslator took 794.07ms. Allocated memory is still 222.3MB. Free memory was 136.0MB in the beginning and 106.6MB in the end (delta: 29.4MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2024-02-02 09:18:39,565 INFO L158 Benchmark]: Boogie Procedure Inliner took 67.51ms. Allocated memory is still 222.3MB. Free memory was 106.6MB in the beginning and 104.2MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-02-02 09:18:39,567 INFO L158 Benchmark]: Boogie Preprocessor took 67.19ms. Allocated memory is still 222.3MB. Free memory was 104.2MB in the beginning and 101.3MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-02-02 09:18:39,567 INFO L158 Benchmark]: RCFGBuilder took 838.76ms. Allocated memory is still 222.3MB. Free memory was 101.3MB in the beginning and 128.1MB in the end (delta: -26.7MB). Peak memory consumption was 26.1MB. Max. memory is 16.1GB. [2024-02-02 09:18:39,567 INFO L158 Benchmark]: TraceAbstraction took 222817.52ms. Allocated memory was 222.3MB in the beginning and 3.4GB in the end (delta: 3.2GB). Free memory was 127.0MB in the beginning and 1.6GB in the end (delta: -1.5GB). Peak memory consumption was 1.7GB. Max. memory is 16.1GB. [2024-02-02 09:18:39,568 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Witness Parser took 0.16ms. Allocated memory is still 222.3MB. Free memory is still 185.9MB. There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.14ms. Allocated memory is still 222.3MB. Free memory is still 184.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 794.07ms. Allocated memory is still 222.3MB. Free memory was 136.0MB in the beginning and 106.6MB in the end (delta: 29.4MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 67.51ms. Allocated memory is still 222.3MB. Free memory was 106.6MB in the beginning and 104.2MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 67.19ms. Allocated memory is still 222.3MB. Free memory was 104.2MB in the beginning and 101.3MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 838.76ms. Allocated memory is still 222.3MB. Free memory was 101.3MB in the beginning and 128.1MB in the end (delta: -26.7MB). Peak memory consumption was 26.1MB. Max. memory is 16.1GB. * TraceAbstraction took 222817.52ms. Allocated memory was 222.3MB in the beginning and 3.4GB in the end (delta: 3.2GB). Free memory was 127.0MB in the beginning and 1.6GB in the end (delta: -1.5GB). Peak memory consumption was 1.7GB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 771]: invariant of correctness witness can be violated invariant of correctness witness can be violated We found a FailurePath: [L708] 0 int __unbuffered_cnt = 0; [L710] 0 int __unbuffered_p0_EAX = 0; [L711] 0 _Bool main$tmp_guard0; [L712] 0 _Bool main$tmp_guard1; [L714] 0 int x = 0; [L716] 0 int y = 0; [L760] 0 pthread_t t2573; VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, main$tmp_guard0=0, main$tmp_guard1=0, t2573={5:0}, x=0, y=0] [L761] 0 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_cnt],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]]]]] [L761] FCALL, FORK 0 pthread_create(&t2573, ((void *)0), P0, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, t2573={5:0}, x=0, y=0] [L762] 0 pthread_t t2574; [L763] FCALL, FORK 0 pthread_create(&t2574, ((void *)0), P1, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, t2573={5:0}, t2574={3:0}, x=0, y=0] [L719] 1 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]]] VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=0] [L720] 1 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p0_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[2]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[127]]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[2]]]]]] [L720] 1 y = 2 [L721] 1 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p0_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[2]]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]]]]] VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=2] [L722] 1 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]]] VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=2] [L723] 1 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p0_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[2]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[127]]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[2]]]]]] VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=2] [L736] 2 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]]] VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=2] [L724] 1 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]]] VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=2] [L737] 2 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p0_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[2]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[127]]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[2]]]]]] [L737] 2 x = 1 [L738] 2 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p0_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[2]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[127]]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[2]]]]]] VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=2] [L739] 2 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]]] VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=2] [L740] 2 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p0_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[2]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[127]]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[2]]]]]] [L740] 2 y = 1 [L741] 2 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p0_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]]]]] VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=1] [L742] 2 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]]] VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=1] [L743] 2 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p0_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[2]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[127]]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[2]]]]]] VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=1] [L744] 2 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]]] VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=1] [L725] 1 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p0_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[2]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[127]]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[2]]]]]] [L725] 1 __unbuffered_p0_EAX = x [L726] 1 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p0_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[2]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[127]]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[2]]]]]] VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=1] [L727] 1 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]]] VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=1] [L728] 1 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p0_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[2]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[127]]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[2]]]]]] VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=1] [L729] 1 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]]] VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=1] [L745] 2 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p0_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[2]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[127]]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[2]]]]]] [L745] 2 __unbuffered_cnt = __unbuffered_cnt + 1 [L746] 2 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p0_EAX]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IntegerLiteral[1],IdentifierExpression[__unbuffered_cnt]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[2]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[127]]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[2]]]]]] VAL [__unbuffered_cnt=1, __unbuffered_p0_EAX=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=1] [L730] 1 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p0_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[2]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[127]]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[2]]]]]] [L730] 1 __unbuffered_cnt = __unbuffered_cnt + 1 [L731] 1 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p0_EAX]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IntegerLiteral[1],IdentifierExpression[__unbuffered_cnt]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[2]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[127]]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[2]]]]]] VAL [__unbuffered_cnt=2, __unbuffered_p0_EAX=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=1] [L765] 0 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p0_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[2]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[127]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[2]]]]]] [L765] 0 main$tmp_guard0 = __unbuffered_cnt == 2 [L766] 0 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p0_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[2]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[127]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[2]]]]]] VAL [__unbuffered_cnt=2, __unbuffered_p0_EAX=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, t2573={5:0}, t2574={3:0}, x=1, y=1] [L767] CALL 0 assume_abort_if_not(main$tmp_guard0) [L3] COND FALSE 0 !(!cond) [L767] RET 0 assume_abort_if_not(main$tmp_guard0) [L769] 0 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p0_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[2]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[127]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[2]]]]]] VAL [__unbuffered_cnt=2, __unbuffered_p0_EAX=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, t2573={5:0}, t2574={3:0}, x=1, y=1] [L771] 0 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p0_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[2]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]]]]] VAL [__unbuffered_cnt=2, __unbuffered_p0_EAX=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, t2573={5:0}, t2574={3:0}, x=1, y=1] - UnprovableResult [Line: 719]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 720]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 721]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 722]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 723]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 724]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 725]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 726]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 727]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 728]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 729]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 730]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 731]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 732]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 736]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 737]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 738]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 739]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 740]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 741]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 742]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 743]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 744]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 745]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 746]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 747]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 761]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 765]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 766]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 769]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 772]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 18]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 763]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 761]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 124 locations, 61 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 222.7s, OverallIterations: 124, TraceHistogramMax: 1, PathProgramHistogramMax: 14, EmptinessCheckTime: 0.0s, AutomataDifference: 198.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 10640 SdHoareTripleChecker+Valid, 21.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 9499 mSDsluCounter, 2338 SdHoareTripleChecker+Invalid, 17.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1949 mSDsCounter, 1863 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 27387 IncrementalHoareTripleChecker+Invalid, 29250 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1863 mSolverCounterUnsat, 389 mSDtfsCounter, 27387 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 776 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 725 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 7.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18430occurred in iteration=104, InterpolantAutomatonStates: 861, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 22.6s InterpolantComputationTime, 2394 NumberOfCodeBlocks, 2394 NumberOfCodeBlocksAsserted, 124 NumberOfCheckSat, 2241 ConstructedInterpolants, 0 QuantifiedInterpolants, 53963 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 123 InterpolantComputations, 123 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2024-02-02 09:18:39,622 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE